Anal TMI!!

I had anal sex with my boyfriend on Sunday morning and immediately I bled a bit, since then when I would use the bathroom I would bleed a little and I had thought the bleeding stopped until today I went #2 and when I cleaned myself I had bled even more than the first few times. Now I have a little bit of pain. I get very anxious and feel like I'm gonna pass out when I see blood that isn't from my period so I'm a little nervous. I just wanna know any of you guys experience and what u guys have gone through because I'm scared and don't know what to do or what is normal. Help please