Can Having a Tubal Ligation Cause Me to Gain the Fat Back in my Abdomen Even Though I Lost 8 Pounds? (photo)

Can having a tubal ligation cause me to gain the fat back in my abdomen even though i lost 8 pounds? I had a liposuction in 2008 (abdominal area). Wish great results. I was 176lbs pre lipo dropped to 155lbs after then jumped to 180lbs. During that time my abs still looked great even at 180!. I had a tubal ligation Jan 2012 (weight was at 176lbs) Now. I am 166lbs and my abs look like the fat is back?