Just one of the many symptoms we have to put up with. You'll get used to it after time and they will start to at least seem to hurt less.
My doctor warned me that this would happen several weeks before it actually started happening for me.
i was told it was probally sciatic pain (hope i spelled that right). ive had it off and on from about week 21...am 28 weeks now. mine is mostly in the crotch area right where my thigh meets the middle. very sharp, lasts only a few seconds and seems like ill go a few days without the pain and then BOOM..have a day that have 7-10 'episodes'. anyways, normal i suppose. good luck to you and congrats!