Need some advice or insight

So I am about 5dpo according to the app calendar I didn’t track ovulation but for the last couple of nights I have been feeling light headed dizzy and nauseous. I only get nauseated at night. I am fine during the day. On top of this I’ve been having slight cramps and sore breasts. Is it possible I ovulated earlier because I usually don’t feel any symptoms Pms/pregnancy until the week of my period if not within a few days. I’m just confused about it we aren’t actively trying right now but we also aren’t preventing at this point we thought if it happens it happens