I am 40. i had unprotected sex before ovulation and i think my boyfriend pulled out too late. what are my real chances of becoming pregnant from that?

Depends if u ovulat: Ovulated, if u did u could very well be , if u do not want to be u can do the morning after pill otc up to 72 hrs after the unprotected sex, or the perscription one Ella (ulipristal acetate) up to 90 hrs after.

Not likely: I am not sure how long before ovulation this occurred, but chances are low that you got pregnant from this if was an isolated event. However, i would recommend that you use more reliable method of birth control.