any other moms tired..ALL the time?

I feel like icomplain too much about being tired. I have a 19 month old and a 4 month old and he only wakes up once a night but quickly falls asleep after a bottle so that's not too bad. I also start work at 5am sometimes 6am and get 6-7 hours of sleep. I have anemia which really makes sense but I take my iron pills n still feel shitty throughout the day after I get off work. i take a nap with both babies if not I would NOT be able to function. I get too tired to do any activities out the house. any other moms struggling as well?