Looking for an answer

I'm 8 days from menstrual cycle. My husband and I don't use any form of contraceptive. We were "together " around 4 days before my ovulation, per app not tested, I have had nausea a bit, and I have this sour like feeling/taste in my jaw. I know I'm too early to test, is this possible pregnancy symptoms or just menstrual cycle stuff. I didn't have any symptoms, until like 2 days after I tested, with my first child