Feeling tired and anxious

I get frustrated with the changes in this disease.  To feel great one day and like poop the next is disappointing.  On top of that, I had an MRI and I need to go see my doctor.  I know there are changes since my last MRI.  I feel them in my mobility, however I find it hard to hear and see.  Is she changing my meds?  Will they make me feel worse than the avonex?  Will I end up disabled.  Today I just feel so tired and I don't know how I can take any more.  How will I navigate the changes?  How am I going to do this?  It feels so big and I am so sad for the lifestyle I am losing.  I am not as happy of a person as I used to be.  I feel trapped by this disease.  I miss feeling free to do what I want.  Today I wanted to swim or walk and I am to tired.  Do I push through this fatigue?  Will it make me worse?  Will it make me better? My husband and I have been picking at each other.  Once he gets some m"man time" he sometimes forgets to be caring and think of me.  Then he told a lie.  I don't tolerate lies.  They undermine a marriage.  We have made up and I forgive the little stupid lie, and although I love and forgive, I can't forget.  Lies make me feel unsafe and stress me out.  Stress is bad on this disease.  And it heated up a little today.  I can't wait for cooler weather. But will it help.  I am so tired today.  Sometimes I feel like giving up.  But I won't and can't.  I am just tired and tired of fear.  Tired of my body.