Wanting another baby so bad!

My son will be a year old on Saturday, and his babysitter got her second bfp yesterday!! (her firstborn is nearly a year and a half) So now I'm super emotional about my baby boy not being a baby anymore, AND super jealous that she's pregnant again..anytime I mention another baby I either get a flat out no, or he talks about how scary a thought it is to have 2 running around the house...he wants to wait at least until next year to try again, but I want to try later this year..its killing me and I just can't get put of this funk.. And as the days draw closer to my son being a year old my emotions are getting worse and depression keeps sinking in.. Any advice, or ways to get my mind off everything??