I get that dull ache all the time while im bfeeding, and never actually get a proper period....sooo frustrating! Well i ended up in hosp on sat as was on erythromycin for a strep c infection(or so my doc said) Anyway, i took a high dose of 500mg 4xdaily (yuk) and by 48hrs in was feeliing horrendous, vomiting, temp fluctuations from 34 degrees up to 40, aching boness, and my heart was doing 180bpm!!!!!I immediately thought i had endometritis despite the fact my spotting is minimal... While there they took a white count which was normal, and sent me up to gynae who didnt think it was sepsis (awaiting new swabs) The consultant thought i had an alergig reaction to the medication, and like strep b, strep c only needs treating in preg so looked like i took them for nowt!!! still a bit achy, and getting strange tummy pains, but i guess i can put that down to hormones also. GRRRRRRRR. hope you are all well. x x