Cover up plants?!?

Hey should I cover up my plants when it rains, their about 2 weeks into flowering,and I heard rain is bad for the bud cuz it washes away the resin

I don't think the rain would wash away the trichomes, but too much rain and/or high humidity can cause bud rot, mold and mildew. Covering them up is more likely to compound the problem.

Just leave 'em be. Rain is good for plants.