Sooo.. what are the chances I'm pregnant?

This is my first month trying bbt. I had been on the pill for 4-5 months up until this month. I kinda thought that it was so late in my cycle that ovulation must have already happened (it might have gotten a little thrown off since this is my first month off the pill). And two days before a temp spike my husband and I had unprotected sex. I'm still not super familiar with bbt charting, but my guess is that means ovulation happened the day after we had sex. What do you think the chances of pregnancy are??