Hey, congratulations on your pregnancy! Do you know how far along you are?
I noticed a couple of questions pop up and think I might be able to help as I've been through it all with my son (he was planned after my PEs).
You can inject anywhere that is ahem fatty. The tummy is an obvious choice, next is the thigh, but you could even try your bingo wings if you wanted to. I'm not saying you have any and as a self injecter I always wondered how I could actually reach there properly...
As for the delivery, well, if you are planning a natural delivery you will be asked to stop the injections as soon as you go into labour. Epis are allowed after 12 hours, as are spinals should you require an emergency section. I believe that an emergency that happens less than 12h since your last shot will probably have to be under general anaesthetic.
In my case we went for a planned section. I was on a very high dose of fragmin and there were a couple of other unknowns so nobody wanted to run the risk of needing an emergency section. Even just in terms of clotting, a planned section is much less risky than an emergency section.
One thing you might want to request from your midwife is a referral to a consultant. As a previous clotter you fall into a higher risk category. Also, they might want to monitor you more carefully since you were still on warfarin when you conceived.You can also ask your warfarin clinic to monitor you. They looked after me throughout my whole pregnancy along with their haematologists.
Wishing you ladies all the best with your pregnancies!