I lost my virginity several months and ago only recently had sex again. Now when I did, me and my bf were alarmed to see quite a bit of blood. What could this be? He suggested it was my hymen "healing up" again cos I'd been inactive for quite a while but I haven't heard of anything like this. It only hurt a lil at the time and there's no pain or anything now and it's now happened again. What could it mean?