Trying to TTC but I think I maybe have something for going on? Any experience please?

Currently I am 12DPO tested a few times and were negative. I have been having bad (took pills to relieve) period cramps for the last 2 weeks; it’s central and motion stopping pain at the ovaries a lot of the times. Since 2 days ago I have been feeling like the blood is going to go down any minute but it’s just excessive CM. I have an OBGYN appointment Tuesday. Can they prescribe me fertility medication? I will disclose this to the doctor but anything else I should get done or mention?