Needing some encouragement.

We've been TTC for 4 with the help of  meds. I've never had a regular cycle and at time I visited my dr I hadn't had a period for about 4 months. Really hard to track ovulation without have a period. So my dr stated me on Clomid and Medrixyprogesterone to help start my period. I went through two cycles using Clomid without ovulating. This past cycle my dr took me off Clomid and put me on Letrozole. This time I did ovulate. AF was due yesterday but since I'm never regular l I don't put much value in when a calendar says it's coming. I've taken two test and gotten two BFN.