I'm 19 and I had protected sex (for the first time) on August 13th and my last period started August 7th and lasted 4 days. It's now September 7th and I have some small cramps and was experiencing white discharge a few days ago, but no period yet. I haven't been exceptionally stressed, but I have been worried about it, and in the last few days extremely scared. Haven't taken a test yet. Help? And please pray that I'm not pregnant, I'm so scared this will ruin my life. Which test should I buy?

EPT and Clear Blue Easy are good but so are the cheaper versions. You are close enough to tell with any of them. Did the condom break or are you just late?
Now for the real problem. I think you need to be on the pill or something like it. Two forms of birth control are needed to prevent pregnancy. One can fail at any time and you need a back up.
I also think you are stressing just a bit. Relax and I bet your period will start.