affect on liver, what causes awelling of the feet and hands

In april this year I was taken to hospial with a perforated duodenal ulcer, I had half and hour to live, unfortunately this went undiagnosed by my doctor, more fortunately the surgeon saved my life. The consultant for that reason put me on 2 x 15mg of Lansoprazole, since then I have suffered with swollen feet and ankles and swollen hands both intermittently give me pins and needles, my hands and ankles hurt with movement, my G.P tells me no to worry, but I do worry, she doesn't seem to know why this is happening, which doesn't help me to help myself. Youyr sincerely Kathy