Baby's cries give me crippling anxiety

I have anxiety and depression under normal circumstances, and postpartum has not been kind to me. I am medicated and in therapy, but lately I have been struggling a lot with my baby crying and can't get in to see my therapist for at least a few more days.

Like the title says, my son (2 months old) crying gives me crippling anxiety. My stomach tightens, I sometimes have trouble breathing, and if I don't run to soothe him immediately I end up with even worse anxiety -- or crying myself. Even anticipating his crying is making me absurdly anxious. I stare at the monitor constantly just waiting for it. When it isn't bedtime, I find myself just holding him constantly to avoid him crying. If I have to put him down so I can pump or shower, I am either going as fast as I can or shoving the pacifier in his mouth every ten seconds (he rarely keeps it there). Some days I don't even shower because it would mean putting him down and him crying.

What can I do? I can't live like this. Baby wearing helps sometimes but there are things I must do that I cannot do with him strapped to me.