Bleeding after sex

So I just recently lost my virginity not even a month ago. We’ve had sex pretty often since then, and for some reason I keep bleeding. It’s not enough to be my period because I usually have a heavier flow. It’s really annoying and I don’t know what it is either. Does anyone have any idea what it could be? Or has anyone experienced something similar?

Side note, it’s not just after sex. I have spotting even days after, and have had it for a few days.