I Have Type 2 Diabetes. My Doctor Prescribed Actos To

I have type 2 diabetes. my doctor prescribed Actos to control my blood sugar. and that it does very well. in 2013 I had a stroke as a result of high blood sugar and high blood pressure. I was prescribed actos 4 months ago and have gained 50 lbs! my diet habits have not changed. because of my stroke I have limited use of my right side so my exercise program greatly decreased in 2013. I did continue to work until june of this year. my right hand and leg have begun to swell much more than ever before and am experiencing blurred vision. what is going on?? and what can I do??