need a break?!

I have an almost 3 year old and a 6 month old. I am a SAHM and do everything in the house and with the kids and when I say everything I mean everything. My husband works. He usually is home by 4 and I make dinner, feed my toddler and breastfeed my baby, he occasionally cleans up dinner but leaves me to clean up my toddler he does anything to get out of cleaning her up, I pack his lunch, wash his clothes. Alls I ask for is a little bit of help, it's exhausting to have to keep repeating myself that I need help so I have just stopped asking. He must  think I'm joking. I feel like a bad mom bc I feel like I need a break. Not a break away from my kids and my life just a break as in my daily routine. I want him to offer to do things even if he doesn't want to. There are plenty of things I do all day that I don't want to do but I do it for my kids and for their well being. I guess I just needed to vent and would like to know I am not the only one who feels this way sometimes!