I had what appeared to be an open skin ulcer under a flap of skin where I had my c section, well I took anti biotics and it healed, while it was healing I noticed I was getting one in my pelvic are where my underwear rubs the crease of my theigh. they didn t start as uclers, well the one on my abdomen just opened one day and was bleeding and wouldn t heal. the pelvic one was a pea sized knot that wudnt go away and I popped the skin and it bled and bled and bled, now its just an open wound that wont heal. looks like a cigarette burn. what is this??????