Hi and welcome. The awesome Jaq has said literally everything I was going to!
But I remember just qualifying as a teacher and I know how scary that is, but the only way to deal with your MH is to talk to your fiancee. Explain to her the best you can - or show her the post you've just written. Maybe see if she'll go with you to the Dr? I know I've been to most of my husbands with him.