Butterfly83, hi and welcome. I'm another Jan 07 TTC'er and plan to start IVF#4 at the end of this month... GL for your cycle!

Leabie, sorry to hear you're getting the AF from hell. I had one of those last week and they're not fun at all. I think mine was because my hormones were all screwed up after the chem pg the cycle before. I also had an AF like that after my first Clomid cycle and after one of the IVF's (can't remember which one). I've only ever had an AF like that after some sort of "eventful" cycle, not a normal cycle, so I guess it could be due to the injections. Although, I suspect it's not directly due to the injections - I think it's more likely the injections caused a change in your hormones that in turn caused the AF from hell. But that's purely speculation based on my own experiences. If someone with more scientific knowledge tells you otherwise, I'd assume they were correct rather than me.