first of all I'm pro-vaccines, and I'm not trying to scare anyone out of it. I'm happy I got it and I am 99.9% sure what I'm felling is unrelated to the vaccine itself. I had the Tdap vaccine yesterday and after a few hours my arm felt sore, as normal. later, at night, my lower back was killing me(constant pain) and I was having a few Braxton hicks. I woke up a few times very uncomfortable but went back to sleep. this morning I am cramping(like period pain, but constant, not in waves) and have some sporadic Braxton Hicks. The baby is moving just fine, I am 31w+5d. anyone else had this happening? any advice would be very much appreciated, many thanks in advance.