ok so i used clear blue digital opk and got solid smiley face on CD 14.. Cycles are anywhere from 28-32 days long. I tested again CD 17 and opk was negitive. now I'm on CD 22 and had one left over cheap opk and took it and it looks positive again to me? could it be a 2nd surge? Or could it be from the clomid. my boobs are a little sore, but that's normal during the tww for me. I have been ttc for 15 months and had a mc last year in sept... Help!? has this happened to anyone, or anyone know what's going on? opinions?

this is todays opk