bud rott???

i checked on my one plant today that i acidenty left partially in the rain. One on the top buds had a little rotted part on it about the size or a loonie on it. I picked it off and air dried most of the water off the plant. then put it out in a sheltered area. Do you think thats a big deal, or maybe will it spread??? Anything i should do to stop it??? THis plant has about 2 more weeks to go

as long as u didn't contaminate the rest of the plant by touching it after handling the mold and not washing your hands.and you shook off the excess water off the plant every so often and keep an eye on it u should be ok .