Spotting after sex

I’m really confused! I had a miscarriage 1 1/2 month ago with d&c! I got a period after that. On Sunday I had sex and I spotted very little only when wiping, and today the same thing happened sex and then barely some spotting. I took a preggo test Sunday which had a faint positive. But maybe that’s from the previous pregnancy. Idk what’s going on with me. Anyone have opinions?