What could this be?

Brittany • 27: married to my best friend of 21 years: twin 7 year olds: 3 month old daughter: law student:
I have had really bad headaches everyday since ovulation, pain on my right side only during intercourse, I've had this aching pain kinda like cramps on my right here and there and then after ovulation I've had light cramping here and there. My AF is due on Monday according to glow but this Friday according to Ovia. Could this be pregnancy symptoms or my body is just going crazy!!!