Anal bleeding could be because of haemorrhoids or anal fissure
. Haemorrhoids(piles) is a condition where anal veins are dilated and can cause bleeding. Anal fissure is a break in the lining of anal canal
which can also cause bleeding but it will also be painful. When you ejaculate the anal sphicter will also contract to certain extent and which can cause bleeding because of pre-existing fissure or piles. You need to consult a proctologist
. Avoid constipation
, take plenty of water, high fibre diet.
wish you a speedy recovery.