Remember to rest a lot and stay out of the heat.

I still work full time but when I come home I have to sit down and do nothing. I can't clean the house or do laundry or shop after work or I'll be useless the next day.

Just pace yourself. Take naps if necessary and do housework in little sections on days when you have the extra energy.

My house looks messy most of the time and I have to accept that.

I hope you'll find out soon about what is causing all of this for you.