I hear you. It is hard to accept that the pain is there regardless of what path you choose but don't lose sight of what is also liberating.
You know the pain is there whether you stay or run.
You know you love him despite all this hurt...both his fault and not.
You know he's trying and you know you will not have smooth sailing ahead all the time.
You also know knowledge is power so look at all these things you know as fact.
When you get far enough away from the initial shock and hurt, you can see the truth of the matter is whatever way you choose. Then put away the confusing feelings and go forward with what you know. Those are the things I tell myself. I don't seem to be far enough away yet but my counselor sums it up exactly the way I would. She says 'you choose to love him and continue with him so get to it. It's not so much about not being able to trust him. You can't really trust anyone but you can trust yourself so know how you will handle things if he acts up. That's all you can do.'
It sounds like you need to spend some regular time edifying yourself.
You must get some sleep and running will help immensely but you need your strength first. What is available to you to get your soul and body nourished? It isn't self indulgent...it's absolutely necessary. I know how this feels...how impossible this feels. Start small. Tiny, densely nutritious meals..grazing even. Clean water sipped throughout the day. A glass of wine in the evening while in a bath with lavender essential oils or something you like.
If nothing else, maybe quiet walks and deep breathing.
You will run again and feel good again. It will happen.
One day you will realize how long it's been since you thought about *_____* fill in the blanks...It may have only been a week but it's longer than you previously thought possible. It will happen.
The tag line of my email reads "Everything will be okay in the end. If it's not okay, it's not the end."
I hold to that and am amazed every time things feel a little more normal. A little better than before.
(((Hugs)))
Me: 44 BS
Him: 40 FWS
Ow: 47 head case, no obs
5 DD's: 23, 20, 19, 17, 12
Last D-day: August 2012 with lots of very blurry lines.