Could I be pregnant? For the past 30 days my SO and I have had Sex almost every other day and he cums inside of me. I am now near my period date of which one app (My days) says should have started on Sat and Glow says it should start

Could I be pregnant? For the past 30 days my SO and I have had Sex almost every other day and he cums inside of me. I am now near my period date of which one app (My days) says should have started on Sat and Glow says it should start Tuesday. I am worried because I feel a heaviness in my ovary area, a slight twinge of pain on thr left then the right then back onto the left. It's not painful just uncomfortable. I haven't been able to sleep at night but as soon as the sun comes up I can't keep my head up. During the day I get extremely tired too. I had a weird crying emotional fit the other day resulting my SO to having to console me. I couldn't help it or stop it... From Friday to Saturday I had an annoying headache it was resolved by Tylenol but it's not like me to get headaches. I don't know... am I tripping or could I be pregnant?