Side Effects vs. Symptoms

I'm feeling oddly optimistic this cycle. I decided to quit charting and using OPK's because it was seriously stressing me out. I decided that I wasn't going to force myself to attempt to get pregnant this cycle b/c it has been so hard these past few months not getting pregnant and I think it was causing me to dwell on the miscarriages too much. I'm now seriously wondering if I am pregnant this time, I have no idea when exactly I ovulated since I'm not tracking but AF is due tomorrow if this cycle is consistent with the past few cycles. I had some spotting starting on Thursday so I immediately assumed the worst based on past cycles, I assumed this was yet another cycle where my hormones plummeted. I started the progesterone that night and the spotting has now stopped. Dare I hope the spotting on Thursday was implantation? The rational part of me says, no you idiot, it's because your hormones crashed again. The hopeful part says, yes, it was due to implantation. Since Thursday, I've been exhausted and slightly nauseous feeling. Once again, the rational side says all side effects of progesterone supplements, the hopeful side says symptoms. Either way, I'm reading way too much into things and I fear I'm setting myself up for a huge disappointment. Oh welll, the benefit of short cycles means that the hope doesn't stay terribly long, I should know for sure in a few days. Too bad I'm too chicken to take a test, I think it would just suck too much to see a negative today, I'm feeling good and don't want the disappointment to ruin my day, so no testing until I feel ready.