anal bleeding after anal sex????

Em • Have a beautiful little baby boy 😌♥️
My partner and I have been having anal sex for about a week. So far we've done it 3 times. The first time was AMAZING. No pain at all, no problems just amazingnsss. 
A few days later, 
Second time. Little sore towards the end, after wards I went to the bathroom and there was a little blood 😕 I had a bath, felt better. No more blood. 
THE NEXT NIGHT (third time) 
Did it again, a little sore but the pleasure over powered the pain. After I was pretty sore, had a bath and went the toilet, all this lube and blood came out?!?!?!?!?! 
Now I realize now that I shouldn't have done it the third time when it was sore + obviously a little tear. 
But now my ass as for this uncomfortable feeling and slight bleeding but only when I go to the toilet (NOTE - I have been able to poop since we did it last night) but when I wipe after peeing there's blood from my ass. 
Okay, help? Should I be worried? 
I don't wanna go to the doctor unless I need to. I'd just like to know if it's necessary or if this happens and it'll fix itself?