I have a very prolapsed bladder. today, after no intercourse, i had a tiny blood at my vaginal opening, not in my urine. is this serious. ?

Ab vaginal bleeding: I gather that your question is whether a tiny bit of vaginal bleeding is serious. That depends on your age, you hormonal cycle, and where exactly does the blood come from. Bladder bleeding will show up in your urine, but could be microscopic. In the vaginal opening, someone with training needs to look up there to sort out exactly where it's coming from to answer your quesiton properly.