My partner and i had unprotected sex last night and he pulled out 5-10 minutes before finishing on my stomach, what are the chances of getting pregnant from precum? he said non got in me but im two days away from ovulation and im really worried?

Pregnancy is possible from what you described. Take Plan B if you do not wish to be pregnant. If you do not wish to be pregnant, use contraception all the time, every time. Consider implanted contraceptive, or IUD. Get HPV, Flu and Covid vaccines. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines

If your pregnancy test is negative, you will worry much less and feel much safer by using "effective ways to prevent pregnancy" (like an IUD, a contraceptive implant or injections of Depo-Provera) plus male condoms as well as PreExposure Prophylaxis against HIV (PrEP). Discuss your options with a caring and knowledgeable gynecologist.