still no AF going a wee bit insane

Kit2510
Hello ladies has this ever happend to anyone else I'm TTC and about to start IVF  stims very soon (1st round) 
Last AF was 26 Dec which was normal but being only a couple days after op (hysteroscopy) there was bound be a glitch in my cycle think zoladex had an influence !! 
Jan 2017 was worried as had no LH peak but then had internal scan Jan 18 and consultant notice 9 follicles so that explained that I hadn't peaked yet so on 21st I peaked Horay 🤣 but that now meant. That AF due about now but still no sign and with almost a 40 day cycle instead of. 28 I'm going a bit insane !!! 
Is this normal this was third op last two didn't effect cycle at all ?? 
Just want to start stims already .. although waited 8 yrs for a miracle I should grumble about a few more days .. just so stressed 😤😤 ... help please x