 When Kelly s mother Jackie, divulges the secret that she s pregnant, misunderstandings and grapevine talk between Kelly, David and Donna threaten to end the relationship between her and David s father Mel. Meanwhile, Nat takes Brandon, Steve and Andrea to the racetrack to bet on some horses due to Andrea s "power" to see the winner, and Dylan plans a special Valentine s Day for Brenda, of donating blood.