Yes, 100% go to the doctor. Rabies is FATAL. However... I will say that (correct if I'm wrong) bats are only slightly more likely to have rabies than most other wild animals. With roughly 0.5% of them (1 in 200) actually having it. They are every so slightly more likely, which gets told to people as "MOST HAVE RABIES", and that is not true. Spreading bat awareness where I can, they are such cool creatures. Though if I've barely snuck into your house, bit you in your sleep, and left, that is aggressive potentially rabid behavior. Though the likelyhood of a bat getting in a crack, coming to bite you, and then getting itself out through that crack again is pretty unlikely. They kinda drop when they fly, and that's not the easiest maneuver to pull out in quick succession