Take a mirror, squat down and check all over for places that look red, inflamed or are bleeding. You're looking for granulation tissue, which if you google it, you'll find is basically skin that heals over a wound in a strange way meaning it never fully heals. I had a small patch near my urethra for a good year, which would be fine one day and then cause bleeding the next, especially if i stressed the area by walking a lot, etc. It is very easy to get rid of, but you need to go to a doctor, gyno or obstetrics even I think because they are common after childbirth. Basically they form when wounds are in wet areas.... It's possible you have granulation inside your vaginal canal somewhere, which would account for the bleeding upon dilation. Sometimes it won't go away on its own, so get it looked at and fixed. Good luck!
