Its my 1st month of charting i did a hpt in 12 dpo and bfn then aaf cames at 15 dpo it was late due to duphaston then my temp droped in the day af came 15 dpo droped to 36.3 after it was 36.6 then the next day spiked to 36.7 and the next days its around 36.5 .. P .S i got my af this cycle 2 and half days only i used it to be 5 to 6 days i got it this month shorter than 3 days .. then i did another hpt at 18 dpo which is cd4 and bfn too now its finished but i feel my body wired like back pain and heartburn i dunno whats goinng on i take clomid this cycle is its symptoms??