Bleeding at 7 weeks 2 days

Heather
I am 7w2d and just had a small amount of blood when I went to the bathroom. I went half hour later and no blood. My husband and I had sex this morning. I'm concerned bc I had a miscarriage back in december but I had to take the meds to start it so this is new. Could it be from the sex? Do I just wait and see what happens over night?