I'm having a pregnancy scare right now. This is my first time using this app and I only have one period scheduled. The app says I would have started today (8/11) but I honestly think I start 8/13, because it would be the same time as my last one. I have a habit of reading for symptoms that I possibly have or don't have so I'm automatically thinking the worst. I've just recently achieved penetration, but it was unprotected and there was a lot of precum. I am dizzy/headache, tired, cramping, back kinda hurts, and very hungry lately as I approach 8/13. I'm not nauseous, and I'm not craving anything specific.

Also any tips on how to have the talk to get my partner to use a condom in the future?