Could be TMI...

I have had a cut (fissure) on my skin between my vulva and an.us, which is the perineum. I have had it for probably more than two weeks. I have been trying to get it to heal, but I showed it to my husband today and he was pretty freaked out by it, saying it ought to be checked out. So I thought maybe I should go to my gynecologist for it. I will have to call him tomorrow. Thing is I have been sexually assaulted and abused in the past and I have really been avoiding going to the gyno. I went there to get an IUD put in and a year after that to get a pap smear. I was supposed to go every year since getting the IUD but it has been 2 years since the last visit. Every time I go, it hurts so bad to get that thing put in me, and they crank it up so much it hurts. I can't imagine how much it would hurt to have that device put in when I have this horrible cut on the skin that is supposed to stretch. But I don't know what else to do, and where else to go to get it treated. I am so scared and I don't want to go! I tense up every time that device is put in me and it is miserable! Any tips on how to calm down and perhaps ways to tell the doc that I have a sexual abuse history? It is so painful to use the bathroom and wipe my area with toilet paper. HELP!