Update on this cycle

I started my cycle with using the Provera on Sunday, June 7th. I started the Femara/Letrozole yesterday. I take it CD 3-7 and it is 5.0mg. It has made me have severe headaches... Combination of a cold/sinus and the medicine I think. I go back to the doctor for a check-up on June 22. Then I get my blood work done on CD 20 which is Friday, June 26 to check for ovulation. I will update as soon as I know more!