They sed i ave to av iv antibiotics wwn in labour asap x
You don't 'have' to do anything. The maternity service in the UK is a service and your birth is your choice, they can only advise not 'allow' or 'disallow' anything. Look at the AIMs website or ring them and talk to them. I really get annoyed with some of the language used by health providers in the UK that make out like you are powerless when in fact we have informed consent and any procedure, including antibiotics, should be discussed with you and the risks of having IV antibiotics as well as the benefits should be made clear so you can chose whether or not to consent. AIMs also do a booklet on group B strep and your options which is a good read. You need to know which antibiotic they are likely to use and side effects, also possible effects on the baby such as higher risk of contracting an antibiotic resistant infection. It's also worth noting that there is a lot of new evidence coming to light about the infant gut biome and its role in infant development which would be effected by this.
Its also worth discussing your own personal past experience, for example how fast you labour if you have laboured before and how long there would have to be between the administration of the antibiotic and your birth for them to deem the antibiotic to have been effective and not keep you in anyway.
For example, I was diagnosed with group b strep in my second pregnancy, I am penicillin allergic and at the time the drug used was clindamycin which I'd taken in the past so I was unlikely to get anaphylaxis. My first labour was 7 hours so it was likely to be faster than that for subsequent pregnancies, of those 7 hours I spent 3 hours in the hospital. The antibiotic had to be administered 2 hours before birth or they would be classed as not effective and they would still want to make observations for the next 24 hours. My first was born in the midwife-led unit of the hospital with only gas and air but if I has the IV they refused to accept me on a MLU and said I'd have to be on a labour ward. Statistics show that you are more likely to need interventions and birth is more likely to be more medicalised if you are on a labour ward vs a MLU/home birth. There is also evidence that a waterbirth should not be discounted due to strep B however they said this would be not be available to me.
I chose in the end to have a home birth and go into hospital for observations afterwards. I didn't believe the antibiotics would be administered in time, I wanted another natural birth (gas and air only) and I felt this was more likely in a non ward setting and the MLU wasn't an option. I spoke to the supervisor of midwives and although she admitted it was my choice she still wanted me to talk to a consultant. I spoke to the senior consultant in the end who said I was very well informed and was happy to sign me off.
In the end I had a 4 hour labour that started at 6:30 am and ended just before 10:30. I didn't even contact the midwife till about 8:30am and I would not have had time for the antibiotics to be effective as I wouldn't have got to the hospital within the 2 hour time limit let alone been hooked up to an IV. I transferred as agreed and everything was ok and I was discharged 28 hours later.
I tested negative in my 3rd pregnancy (you should be tested between 35-38 weeks and not before) so they left me alone for that mostly.
I'm now on my fourth pregnancy. The guidelines have changed since my second pregnancy and clindamycin is no longer used due to high levels of resistant strains of group b strep so they use cephalosporins for people who had a mild reaction to penicillin and vancomycin for those who have severe reactions/anaphylaxis risk. I don't know my risk category as my reaction was as a child and it was just noted that I shouldn't receive penicillin anymore so it would be likely if I test positive this time I would have to receive vancomycin, this antibiotic has to be administered by drip slowly over an hour by drip to prevent reaction and I've have to be strapped to a bed during this time, I would still need to have it administered at least 2 hours before birth before it would be considered effective and it is possible my labour wont last this long let along doing all of this. Therefore regardless of my group b strep status I will not have antibiotics during labour this time as if the two hour period is not observed I am treated as if I had not had them at all. I will however discuss where I will have observations after birth if I am positive.
This is of course my case and it shouldn't be treated as medical advice however please don't let them fool you into believing you have no say in this or that they don't have to discuss the risks of the antibiotics with you because they do. I would also look into AIMs and the NICE guidelines around birth and information on group B strep so you are fully informed. You may still chose to go ahead, but at least then its your informed choice as per the law and not just you being 'told' to do something.