I think you need a good check up overall, but they should check your heart. Fluid retention at your age is not normal. And yes, diabetes can be a contributor either type one or type two
You need to do a daily diary about your symptoms as they occur. Don’t put it off to a later time in the day. When you notice it how bad it is how long it last so long
This will help the doctor figure out what is going on
I wish the very best for you