I am 24 weeks pregnant with my first baby.I am having a fairly uneventful pregnancy, but. this morning around 2 i think i had a contraction. My uterus got really hard for around 15-30 sec. It didn't hurt it just got my attention. I didnt get anymore after the first. Afterwards my baby started kicking and wiggling around like crazy. Could that have been a contraction, did it hurt my baby, and should i call my doctor.