6w3d bleeding during intercourse??

demi • Expecting our first precious miracle baby after the Mr. beat testicular cancer, an orchiectomy & chemotherapy 😍👶🏼
I've spotted twice since my pregnancy began, both times being during intercourse. We didn't even do the do on V-day because we were worried it would happen again. Any clues? I would assume increased blood flow causes swelling which causes the vaginal tissues to shear easily? It's just so gut-wrenchingly scary. Anybody have any insight?