Emotionally, we have a healthy marriage, we are very loving toward each other and get along great.
The issue is his many health concerns, it seems like if it isn't his pancreatitis, his diabetes is acting up, or his messed up eye, or his knee, or his diet changes yet again. I have said that I feel more like his caretaker than his wife much of the time. This causes much anxiety and pain in both of us.
I pray a lot for his health and post prayer requests here, but is there anything else I can do?
Same here, sister. My husband has horrible psoriasis (external and internal) which means he's in pain 24/7 and is constantly on pain medications (which cause a slew of side effects, and if he doesn't take them, he goes into detox, which is it's own bit of fun). Plus he has diabetes (which he CAN control with diet, but tends not to...). So he's almost always either tired, in pain, or sick. All day every day.
Wives like us are certainly given a challenging role to fulfill. How to love and support our men without going into "mommy" mode, or allowing their conditions to cause us stress and exhaustion to the point where we're falling apart ourselves.
Since you can't wave a magic wand and instantly heal your husband, you need to manage your anxiety and stress instead. Make sure you're giving yourself some quiet time each day. Pray, read your Bible, listen to music, go for a walk.
Also, make sure that you allow your husband to "be a man" at every opportunity. Husbands who struggle physically tend to feel frustrated that they can't do everything they feel a man should do, and if we hover and baby them and do everything for them, it's emasculating and doing them a disservice. If he wants to say, mow the lawn, and you think "OH no, honey, you don't feel well, let me do that, or we'll hire someone to do it" STOP yourself. If he feels he can do it, let him try. If he manages to do it successfully, praise him and thank him. If he can't manage it, quietly offer to help, then thank him for trying anyway.
Above all else, stay close to God. Always pray for your husband's healing. Pray for your own strength and peace. Try to find the capacity to be grateful for the privilege of ministering to your husband by caring for him. It's an honor to love someone who is sick or disabled. It's a life of service in many ways, and we can find joy in that if we allow ourselves to.