Pregnancy

I didn't see my ovulation this month I'm supposed to see it three days ago but it didn't come out I don't know why because I heard unprotected sex on Sunday today is making it a week for the past few days I have been having some feelings so this morning I decided to test it but it came out negative I don't know if I tested a bit very early please,

Feel really dizzy over a little thing and severe pain down at my lower abdomen wakes up with early morning sickness

Don't know if I tested much earlier because it's 3 dpo I'm supposed to ovulate on 10th but it didn't come and I heard unprotected sex on Sunday it's there any possibility of pregnancy and when should I test again

Please help a sister 🙏🙏