Urge to push....

Ka
Af finally arrived and for the last 2-3 cycles I've been getting the WORST urge to push when I'm on my period. I've never had a baby, but I remember this feeling happened the first time when I miscarried in December. I never had a positive test this month, so I don't believe it's that. But prolapse runs in my family and I can't help but worry. Any input, please?!