Hi Andrea, what day do you take the methotrexate? It sometimes really wipes people out, and I would suggest maybe taking it on your day off ?
Also, for fatigue, try taking more folic acid than just 1 a day. You might want to try adding a B complex vitamin in your supplements as well (I think that includes folic acid) - when I was on mthx, I was sofatiuted my PCP had me taking 4-5 folic acids a day, then I'd take a B complex (with folic acid) at night.
Definitely go get a check up and discuss w/your doctor. Going back to work can take a LOT out of an arthritis patient....it takes so little to make us fatigued and over worked. Methotrexate can compound that effect.
It's good that your husband cares so much - but I'm sorry he's having such a hard time with it. Talk to him and your doctor about things that can help you - getting housekeeping help, splitting the chores differently, better shoes w/insoles to help support your body at work....
Take care.Good luck.**