IUI frustration

[DJTTC]

Hi all,
I am so upset atm & think I just need to vent or tell my story.
I have a beautiful 2.5 yr old daughter who was coneived after 2 long years through iui with chlomid on the 2nd cycle.

We are now trying for our 2nd bub & are at the 2nd cycle with IUI but this time with purogen, then after insemination I have the 4 shots of pregnol.

I am 2wks after insemination today so had my b/t today & was told that it was a BFN, she also told me it looks like af might be quite a few days away & if not here by next wednesday to call & have another b/t.
Not sure why af would take so long to get here?

I am feeling so pg atm (which is just plain cruel), huge boobs so tired etc but I felt pg last month too, I am guessing it is the pregnol injections causing this?

The thing that is hard to understand is with purogen injections it is supposed to be more successful than the chlomid & yet the chlomid only took 2 cycles, I feel like I'm doing so much more this time & my body is all over the place - is it possible for women to react better to different drugs?
It certainly isn't any easier the 2nd time around.
Jo