I really want to be pregnant, could I be?

Savannah

My partner and I use the withdrawal method. We had sex on the first while I was ovulating. On the 4th I started spotting, and that lasted about 3 days. My period had been like clockwork the previous 3 times, starting on the 14th and lasting 5 days. According to glow my period was supposed to start yesterday, and it didn't. I've taken 2 tests, both negative. Am I just psyching myself out by obsessing at this point?