Help! I'm kinda scared...

In Early April I had a misscarrage. They checked my hormone levels after a couple weeks and they had returned to normal. Then in may I had a BFP but no period in between. I have no idea how to judge when I got pregnant.... A couple days ago I had some cramping. No blood but just moderate cramping. I'm so nervous about having another MC. But also nervous because I didn't have a period in between.... Advice?