Okay, so I've looked every where and Im not getting a good answer. So every time I have sex I bleed after, and I don't mean right after, I mean like 3-4 days after sex I bleed like a light period, and when my period is actually due its 2weeks late. What's going on? And why does it always happen?

How old are you, are you using birth control or taking anything?
And most important, how often do you have sex and how often is 'every time?' If this were to make sense, you would have to have sex only once a month.

Im 19, and I do only have sex about once month, and its every time. And no I'm not on any type birth control.

WHy aren't you using birth control unless you are trying to have a baby. If you are trying to have a baby why are you only having sex once a month.

Since none of us are doctors... and apparently you haven't been to see your OB/GYN... (which I suggest making an appointment to see them soon).. its possible you weren't properly ready and as such had insufficient natural lubrication... or he was too rough... cuasing minor abraisons or tearing that took a fe days to heal. (something that is most definitely NOT a normaal occurrence during or after sex.

Im so scared too go, what if its something bad? Im not trying too get pregnant and every time I do have sex I use protection if that even makes a difference. ):

If it's something bad, not going and ignoring it will guarantee it will get worse. Go to the doctor and solve this problem!

If you are too scared to go before you get pregnant... how are you going to cope with the actual pregnancy and everythiing that goes with it... and yes there is a lot. I said that to get you thinking... sometime syou have to pick the lesser of a few evils you are presented with.

I see now... you defined protection and birth control sperately... I see them as the same. I thought you were using none. Good that you are.

You really need to get over your fear of visiting a OB/GYN. THere are many things that can happen when you are fairly young that can leave you sterile or worse... lead to an early death.

Annual visits can catch problems early.