S.E.
Sometimes it is your diet that can cause water retention also. To much refined sugar, caffeine, or even products with caffeine in them can cause water retention in some people. I know it does it to me. Do you feel that you are going to the bathroom as much as you use to go or do you feel it is much less. If it is less I would call my doctor.
High humidity can cause water retention also in some people.
But in closing it is true that some medications can cause water retention. I would call my doctor if you are really concerned. I know when I was on the pill I had some problems and she changed me to the mini pill. A very low dose birth control pill.
Good Luck