Experience eye symptoms and conditions

I have been on Loestrin 24fe for the past three years. The first two years were great; no period since Dec 06, it's very rare that I have any spotting. Since June 2008, my health has gone down hill. I have had extreme weight gain (20 lbs), retaining fluid, fatigue,terrible migraines, memory has gotten poor, lack of concentration, depression has gotten worse, very very moody and will cry at the least little thing. I have also experience eye floaters and eye twitching. My dr. wants to change my BC to Yaz, but the horror stories are the same. At this point, I really don't know what to do. I have been on BC for 18 yrs total. When I first started taking Loestrin, it was wonderful.....up until last year. I am still taking it, not sure if I should switch to another type or totally go off of BC to give my body a rest.