Infertility and Us!

I'm trying to stay positive but the fighting is getting worse.  I feel like he doesn't want to be around me and that we just can't get along...he is so much happier when he is not aroundme.  When he is at work or with his friends he is a different person.  When he is with me he is miserable.  Everything I say and do is wrong....and he blames the medications and my hormones.  I feel like he doesn't even try to understand what I am going through....what it is like to be the one to give myself shots, and take medications, and go to the dr's appointments with my legs in stirrups having things shoved in me.  He says he's with me in this for the long haul and that he's not going anywhere....at this point, I'm not sure.  What is happening to us?  I want this more than anything in the world with him....to bring a baby into the world with him and for him to love me like I want to be loved.  I want to know that he's really committed to me...our marriage, and our possible future family.  I want to know that he's committed to me whether or not we have a child.  Right now...the way he acts when we are actually together....I'm not so sure and it hurts so badly.