Try to enjoy the day making cookies with the kids, the day will come they will not want to do this and it will be missed. If on the days you can't help your husband tell him you have things you can be doing.
I love my husband being home for a little while but he understands when I have to have some me time. Like you I have to do all the shopping for my family and his with all the wrapping but don't complain because I'm disabled and can't work outside the home, so he brings the pay home.
I pray you get to feeling better and God give you the strength to make it through the next few weeks.
Hang in there.
God Bless