Feeling Down and Drowning

Sometimes I feel like nothing is going to make how I feel better. I don't care how others think of me besides my husband and kids. My sleep pattern is so off and I can't take sleep meds because I have a 3 year old I have to listen for. I feel crappy about myself and never have the energy but to take care of my littles and sometimes that feels like a chore. I don't even take in what things my husband or sister n law talk to me about because I just don't care. I wish that I could get out of this funk and feel better about myself but I've felt down for so long that anything I have tried or people trying to talk to me and me vent to them definitely doesn't help. I want to be more happy and not ALWAYS feel like I am drowning.