i would check in with dr.
i have stitch like pain often in my left side as well as when i cough, use washroom, sneeze and it is from fibroids. i had it checked out though.
the period like cramps sound more alarming in some ways since they could indicate something else as in 3rd trimester there could be placenta issues and can present with no bleeding and like that.

i am overly cautious as been spotting on and off since october for no good reason!! the dr is considering bed rest for me for the last bit. i am 30.5 weeks along. can you tell i am counting down??