To see PMD-ASAP. First off- where is the blood from? Rectal bleeding vs vaginal bleeding? Since I dont know your age and whether you are still having period etc- the first thing you should do is to go to see your primary doctor asap or er. Tell you doc regarding your bleeding episode. She/he will be able to channel you to the right specialist- whether you should go to see a gifor a colonoscopy etc or to see a gyne.