Cancelled iui , no af .. Stupid to hope ?

Hi ladies I have ghosted on this site for a while , but feel I need some help. Background: i have PCOS. IHad 3 x failed clomid cycles and had my first IUI cancelled on 29th July due to overstim . 5 follicles too big ( largest 22mm) . Told not to BD , Yet was naughty and did it anyways ..... Had a very light bleed (two days ) a week after cancelled cycle , which docs say would not have been my period ... It's now been three weeks no BFP or AF Had a scan Friday and the doctor was very confused ... Said I would have definitely ovulated a couple of eggs a few days after the cancelled cycle ... But not a clue where my period is .... . I'm getting cramping and have been mega tiered .. Could I have ovulated late ? Confused ... Sorry for the ramble ... Any clues ?