Hello. I'm pregnant 31weeks and 3 days. And I wanna ask. In day time I feel like a sharp pain like sharp pressure about 5 seconds and gone and it's happening 5-6 times. And this night I had one super strong contraction it was so hurt... but my waters not broke, no any other issues. I had 2 pregnancies before so this pain was like in labour... But last about 10 seconds it's gone. In the morning I feeling fine right now. What's that can be? My 2 kids born premature.