second miscarriage

Sh
I miscarried in April and hadn't planned on getting pregnant again but I found out this week I was a few weeks along. 
I got home from work tonight and went to the bathroom and I could feel it happening. Sure enough there's blood. And the cramps are so much worse this time around. 
My SO wants to take me to be get checked, he's convinced it might not be a miscarriage. I'd honestly rather wait till Monday to call my doctor and see her because I just know I've lost another one.