My last normal period was September 12, 2013. I have very regular periods and don't skip. Starting Oct 7, I spotted for 8 days. I did a test Oct 11 and it was positive. But every test since then has been negative. I was supposed to start my period November 1st, but didn't. Haven't had any spotting, cramps, chocolate cravings, or anything I normally do.
This morning I started spotting, but still have no cramps or other symptoms. Prior to the start of the spotting this morning, I had another negative test. So what do I do? Is it stress, something else, or pregnancy? I want a baby, but this being in limbo thing is driving me nuts.

The best answer is whether you get your period now. There is no magic I'm pregnant indicator. The best is the home pregnancy tests and those are only really effective two weeks after your missed period. Some women's pregnancies won't even show on those tests. The other thing to consider is that not all fertilized eggs will implant and of those that implant, some won't get far.

Your body does a good amount of error checking before it lets a pregnancy continue. Some embryos are too mucked up genetically to develop and live. Those are flushed out of the system. Some times there will be enough division errors that a implant embryo will become non-viable and be flushed from your system. This is in place so your body doesn't waste resources on something that will amount to nothing.

Considering all this, you just need to try and try again. Don't stress about it, stress has a severely negative effect on your system. It will happen in time.