My lcl is a little swollen and firm to the touch but no pain hurt playing volleyball with sudden leap to right?

LCL pain: This sounds like a strain and should be treated by rest and ice packs. Return to sports only when walking and running without pain.

LCL sprain perhaps: You describe a mechanism for a likely mild lateral collateral ligament sprain or a potential lateral meniscal injury. If your knee remains swollen, painful or feels loses/unstable for more than a couple days, seek orthopaedic evalauation to obtain thorough assessment and apropriate treatment plan