swollen fingers

The past couple of weeks my fingers have been bothering me. They're a bit swollen from excess fluid or something. My doc says it's normal and nothing to worry about since my BP isn't high. In fact, most times when they take it is lower than 120/80. (If your fingers swell and you have high BP, it's a sign of preeclampsia) I'm supposed to drink more water because ironically drinking water helps to reduce water retention. Go figure.