Welcome to the boards, Chester.
So, really, there shouldn't ever be bleeding with sex, including with first times (and hymens don't usually rip or "break" either unless there's an injury: they wear away gradually, and most often without bleeding). But people often do experience bleeding with vaginal intercourse, especially when they're younger, and that's most often because:
1. No one is using any additional lubricant, or is, but isn't using enough of it,
2. The person with the vagina who is the receptive partner isn't turned on or relaxed enough, or was, but stops being one or both at some point,
3. The person with the penis (or toy, or fingers, if either of those things are happening instead) is being too hasty or rough,
4. There is some kind of infection causing bleeding (the one most associated with bleeding during sex and only at that time is Chlamydia), or
5. One or more of the above.
If you are also having spotting at other times, this could also just be because of your pill, or mostly because of your pill. Progestin-only methods' most common side effect is spotting.
So, looking at that list, what do you think? Do any of the things on the list apply for you that you know of (you say you don't have any infections, so I'll assume you mean you have recently been tested and came out with all negative results)?