Daddys boy

I'm a SAHM so I'm with my boy (15mo) alllll day long. When my husband leaves for work, my son goes CRAAAAAZY like full blown meltdown. Anytime my husband is in sight but out of reach bc pr a baby gate or something, my son has a meltdown and just cries for him uncontrollably. When my husband comes home from work, as soon as my son hears the keys in the door he runs and gets OVERWHELMED with excitement. And will scale the gate and my husband trying to climb up to him. This is all cute and perfect but on the rare occasion that I leave, my son doesnt even cry. When i come back, he acknowledges I'm home by meeting me at the door and maybe a hug and then goes back to what he was doing. but no excitement or anything extra. It kinda hurts my feelings? I do literally everything for him, as I should. I'm his mother. But my husband doesn't do much, hes always working so not around much. Even when hes home hes not really around, he may be in the office doing work or resting bc hes so tired. I just feel like my son doesnt care about me? Im happy he loves his dad despite him working so much and having to miss out but I dont see how im not significant to him. I may sound completely ridiculous. I have a lot going on right now in my life. I think I'm depressed so maybe I'm just sensitive right now and feeling unloved. 😔