In The Past 6 Months Or So, I've Found That

In the past 6 months or so, I've found that I just can't drink enough water. After drinking, I seem to just bloat up and my legs and feet swell almost twice their size. Also, have gained almost 30#s. I'm not urinating any more than usual, either. Last July, my husband and I both quit smoking and started eating healthier. In October I was down to 158#, and am currently at 190#! I have also not changed my eating habits since we started the healthier eating. What would cause this?