What would be causing my eyes to swell up all at once? one or both have done this several times before. used nothing different.

Allergic swelling: I am guessing that it is your eyelids that are swelling - both of them with perhaps some itching but no redness, no pus and no change in the vision. If so then this is probably an allergic response to something you have been exposed to and you will have to play detective - could be cosmetics, foods, laundry detergent, work factors, etc. If other symptoms are present then see your ophthalmologist

Eyes: Usually implies allergic response which could be to make up or environmental. Start with an ophthalmologist, but you also may need to see an allergist