I had cramping and cm from 4dpo to 8dpo. Then no symptom from 9 &10 dpo. Four days more for AF due. Feel like vomiting but nothing comes out. Am I pregnant?

If you're sure of your ovulation date, it is too early to tell if you're pregnant or not. Although it's possible to get an accurate result on a pregnancy test by 10 DPO, it's best to wait until your period is late before testing. When you do, use first morning urine and follow directions carefully.

Feeling pregnancy symptoms often don't start till several days/weeks later. It's different for everyone.

Its possible the cramping and cm were from your ovulation itself, which might have been a few days off from what you expected. See what happens when your period is due.