condom slipped, first month off birth control, a week before my period is due

The condom slipped off at the end of intercourse and we noticed as I was "dismounting". I retrieved it, but in the process I think I got some on my fingers and into myself. This is my first month without birth control in 4 years, and I ovulated approximately a week before. My period is due in a week. I think the chances of pregnancy are slim, but I would appreciate more experienced opinions.... Thanks.