AF due 10/16... but hx of PCOS & thyroid cancer

Alba
Hello all! Hubs and I just started TTC this month for our #1. I've had a long journey got diagnosed with thyroid cancer last year and in January I had radioactive iodine. Doc said we should be good to start TTC next month but i got a little ahead of time and started this month. Took an ovulation test Saturday and it was positive(or so I think) So hoping AF doesn't show up the 16! Anyone else have had experience with thyroid ca? 
Oh and on top of that about 10 years ago was told I have PCOS and tend to have some irregular periods. It's one obstacle after another. I hope I don't have a difficult time conceiving!!!