Tmi and embarrassing

So this is a little embarrassing but every time I go to do a poo my bum bleeds a little. At first it was very light pink but now it's more red and it's also sore and sensitive to wipe or sometimes sit. I'm getting very concerned about it. I can't see where it is coming from. I have tried to take a picture which I won't share. I know I'll have to go to the doctor. Has anyone had this problem and how did you handle it?