i miss the old us

Me and my man have been together for about 4 years years and 7 months. Before i got pregnant it was all about us we would stay fucking and kiss and have a connection. But since i got prego and had our son its dofferent. We dont even kiss anymore!!!!!! Its been like over a year now. Idk he be acting all weird and distant. I be trying to show affection and stuff and i feel like i annoy him . How can i bring the spark back into our relationship. I always tell him that it doesnt feel the same between us and he says im trippin but i aint or he doesnt do anything about it .