I have been taking gabapentin 900mg daily, left leg now has more swelling than right, please advise?

I have been taking gabapentin 900mg daily for 3 months and have developed edema in both legs. ( I read it is a side effect) Edema started almost immediately but drug is helping so I’ve continued taking it. Now my concern is this: Left leg has more swelling than right and now has slight feeling of pulling of skin and tingling. (not pain),but there is a slightly pink area on shin and down to ankle. Can the pink coloration be a normal part of the edema? Thank you.
Medications: gabapentin, actos metformen,lipitor,enalipril