Needs advice and/or experience

Hi, Im a 27 y/o who has had 2 successful pregnancys. About 6 months to a year after my second one was born I was diagnosed with Graves diease{ hyperthyroidism}. My youngest is now 2. I was wondering if anyone has had any experience with being prego with this diease and how hard is it to get prego with it. I also have a slightly tilted uterus, but with my first two had NO problems getting prego, In fact I was on the pill with my first and taking otc films with my second and STILL got prego. I have been off bc for a month now and has had unprotected sex many of times and should be starting in a few days but the tests keep coming up neg. I feel like I did when I was first prego with my second and if Im not now I will be sooo totally surprised cus I feel the same. I actually have no dr to do a blood test and I dont know if a heatlh unit will. I just want to hurry up and find out so I can get a dr asap. Any suggestions ladies?