ok, lets lay this out.
Step one. figure out where you want to volunteer.
Step two. Call and see if they are seeking volunteers. Ask if they have transportation available to and from, or other volunteers that car pool to the place. (If no rides are available, ask if you can tack up a "need a ride" notice in the employee break area)
Step three. Ask if they need heavy help, or can you do light things, on bad days like pet kitties, or teach doggies to sit, instead of walking them in the hot sun. Tell them of your MS, and that you cannot be a firm walker. Some days yes, some days no. If its not a shelter and its a hospital/nursing home/school area. make sure they know that you will have days that you cant run with the kids, or haul heavy books. That you CANNOT be around the kids who are sick, or the adults who are heaving with flu. If its a food bank, tell them some days you can only make phone calls to solicite for donations, and wont be able to stock shelves.
Step four. Speak to the hubby, and let him know what you found out. Tell him of your laid out plan, and your investigations. Does this fit into both of your schedules.
Step five. call them back, and ask when you can start.
If you have a plan, and think it out, and have a clear direction, then its much easier on you, and your family when it comes time to start.
NEVER EVER be afraid to stop this if it becomes too much, or too stressful. Sometimes it is hard to see hurt/sick animals, or watch how many people are using the food banks, or see residents of the hosptial/home die. If you feel it is not a good fit, dont be afraid to go home, and repick a place to help.
Now, lets all go pet puppies.