Suggest Treatment For Random Fluid Retention In Body

I am 24 years old female and suffer from random fluid retention on my body. I have tested my kidney and liver few times and come back ok from a general blood test. I exercise regularly however the past 3 months I havnt. I generally find when I eat out for a few days straight, even if its healthy food, my body bloats. I drink a lot of water and still urinate dark yellow which smells abit,. I have searched about lymphatic system and how it works, I have had a sluggish kidney before. All good now. I am suspecting I have a fatty liver from previous weight ( I lost weight 3 years ago) or a sluggish liver. can you please help.