Could it be more confusing please!?

After my last post my Dr.'s office called back and told me I wasn't due for my period until the 25th or 26th because of when I ovulated and that if I was just spotting (which I was) it could be implantation bleeding. I was in a much better mood then thinking I might actually still be pregnant. So I had very light spotting from Wednesday on. The color was pinkish or brown (which is what color implantation bleeding is supposed to be) and very light. I was pretty much excited and convinced I was pregnant. Well.....then this morning I woke up and there was quite a bit more blood and it was red, not brown or pink. DAMN IT!!!! So I took a pregnancy test, just to make sure I am not crazy and guess what....it was negative like every other one I have taken. I sort of figured. It's because I was getting excited.....I even made the mistake of telling some people I was maybe a little more excited and then researching when I would be due etc. DUMB ME!!! This happens every time...I get excited and then BOOM....my period starts! Great. Now what I am really concerned about is why I started spotting so early and that means my luteal phase (the phase post ovulation to your next period) is short which is not good! THIS SUCKS!!!!! So tomorrow I will be calling the doctor and hopefully going in. I don't want to miss my shot at taking the drugs and starting the IUI process all over again. I already gave myself a day on Wednesday when I first started spotting to feel shitty and sad so I will not do that today. Maybe a little pissy, but really how is that going to help anything? It's not going to change the fact that I am not pregnant and it's really just annoying! So, we have a game plan...doctor tomorrow and another round of IUI...hopefully a more successful round.