Off and on bleeding disorde...r

Hello, I am 25 yrs old and I have had an off and on bleeding disorder. My first period ever was 15 days long and my second one was 50 days long... I also once bled for 9 straight months. I have seen different doctors for it, but none of their remedies ever really permanently cured me. I have been bleeding for over a month now and last yr I noticed whenever I consumed lactose containing foods, I would start bleeding a few minutes after. Well, I figured I'm lactose intolerant and I've since then taken over the counter medication for that, but lately I have been slacking off because I'm just too depressed to remember, but I started taking it again yesterday; hopefully this ridiculous bleeding stops in a couple of days... I fear for my life. I don't feel like a confident attractive woman because of this ongoing problem, it has screwed up my life. I'm praying for a reply, thank you.