Hello everyone. Ovulation was on the 30th, two days later I had interc…

Hello everyone. Ovulation was on the 30th, two days later I had intercourse (inside), because I read that after such time the egg is not fertilized anymore, although the app showed a fertile window...The last two cycles were 26 and 28 days long, now it's already 30 but it still hasn't come. It only hurts my chest and lower abdomen occasionally pulls (although all other PMS symptoms were very pronounced), sometimes it makes me nauseous. So I think about doing a test or is it too early?