I'm about 7wks pg with my 2nd, since yesterday, my stomach muscles have been absolutely agony, as if I've been doing crunches all day (I imagine anyway - having never done crunches!) - upper stomach mostly. Did anybody else get this 2nd time? My waist is already up 4" in the 2wks since I got my BFP, I have read you show sooner with second as everything has already been stretched, but didn't expect any aching! any advice? TIA.