For second time mommies

I had my second baby 5 days ago and already have a 21m old toddler. Today my toddler was sent home from daycare due to a stomach bug but he was still very active and demanding and threw one temper tantrum after another. I know a woman is supposed to rest after a birth but it is just not happening. My husband tries to help but he can not do the dishes (clean baby bottles), cook and take care of our toddler at the same time. So a lot falls on me. I am full on in the baby blues and randomly start crying during the day, plus the post partum contractions are so painful. The day is now over here and I am ready to go to bed but my vagina is hurting a lot and I am wondering how I will survive the next 4 days when my 21m old is home. I need help and any tips you have because I will crash this way.