Welcome to HCM.
Bleeding,pain and watery outcome is most likely due to injury inside after sex and followed by infection.
Take proper local care,clean it properly with anti septic soap.
Start complete course of oral antibiotics
like oflox/ornidaole with lactobacillus
Local application of cream containing lignocaine and other soothing agent will be helpful.
Take light,liquid diet. Liq.paraffine or sodium picosulphate is advisable to make the stool loose which helps for local healing.
Your other symptoms might be due to multi vitamin,calcium deficiency
Start multi vitamin and calcium supplement
to improve general health.
Avoid anal sex and always go for protected sex.
Consult your physician for better medical management.