nah, it's not a pathetic post (so scrap that thought right now!)

going through AC makes it hard - you know TOO accurately when everything has happened, and it makes you read too much into everything

your symptoms up until now would have been related to the trigger shot as you mentioned. It leaves your system before any hCG climb from a pregnancy if it occurs. you are essentially 12 DPO, and that can and often is, too early to get a positive on a HPT. with DD's IUI cycle, I got a negative until 15DPO, and my levels were very low with her (to the point someone clueless told me to be prepared to lose her too, the numbers were far too low)

your cycle at this stage could go either way - i'm not going to blow smoke up your butt and say it's all good - it may very well be, but it may not. only your BT will tell you in a couple of days.

what progesterone support are you on? i found, on a fresh cycle, the progesterone support didn't stop AF, and i got her around 12DPO, on frozen transfers, i didn't get AF until a couple of days after stopping the support...