bleeding after sex for first time and pain during sex

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General

I lost my virginity two nights ago well I think i can say thatas we only had sex for about 5 minutes because it was unprotected so I backed out!
I was bleeding that night which I thoguht was normal as people had say you bleed someonetimes after been broken into!
The next day I was bleeding a bit, it was only slightly but it was still there so I came on here and a lot of people have said they have been like this for a few days!

So the other question i really have is yhis
I had sex again last night with the same person but with protection, though when he went in me it really hurt, so I pushed him back three time. I was really angry and didn't know why, but it was okay after a few minutes!
Is this just normal pains from being stretched or something?
sorry it's long! I'm just a bit wrorried!
thank you for whoever knows anything!