Hii, right now I was taking a shower sitting down in the tub. & when I finished, I tried to get up. I always grab somewhere from both hands & I open my legs wide open, not too wide & I push myself a lil up/back so I could have room to stretch my legs. But right now while I was trying to get up, i got this pain/cramp on my abdomen idk why. It was only for like 2 seconds. Should I be worried? Maybe I messed up something, I'm 28 weeks pregnant