Relax!!! When I was trying to get pregnant with my daughter, it took 6 months. We stopped birth control in August, and I was sure I was pregnant in December, but the test said no. My period was late and everything. Then, I didn't have one until Janurary and it was really really heavy. In March I still hadn't had another period, but I knew I didn't want a Christmas baby, so I took a test just to make sure I wasn't pregnant so I could go back on b/c and it came up positive. My suggestion is to quit being so anxious about it, I was and it didn't work for me. Once I stopped worrying about it, then it happened. I have a feeling that's the way it works for a lot of people. Also, remember that less than 30% of fertilized and implanted eggs are actually viable to the body and will grow to a baby. If the body suspects something wrong, it will naturally release the egg even if it has implanted. I have a feeling this is what happened to me that December/Janurary.
I did a lot of research on tests to see which ones are accurate, and surprisingly, Dollar Tree ones tested in the top 3, along with EPT and First Response. I say that when you look at the prices, the cheap ones are the way to go! Oh, and the digital ones? I opened one up to see and it does exactly the same thing as a regular one, it just says pregnant if the test line is activated, and not pregnant if its not. Save your money. I hope this helps alleviate your stress. Its a long slow process to grow a baby once you conceive, so you need patience. Lots and lots of it. good Luck!