Second round

Nikki
My last af was 12/24...took clomid 50mg from 1-24-1/29. I believe I ovulated on 1/7 ; I didn't confirm with test just had pain. My nipples r swollen & hurt and now the side of my boobs feel like they burn when I touch them and seem bigger. I took a test today but bfn..glow says af is due 1/25 but other apps say 1/21...when would a positive pregnancy test show of clomid worked?! Please help!