Hi, I Have Quit Smoking Bk In Nov. I Have

Hi, I have quit smoking bk in Nov. I have gained about 30 lbs. I swell a lot most days and some days very few I don't. I watch what I eat and I go to the Gym but im not losing. I hadlost 14pd got sick for 4 days gained 9 bk can u maybe tell me what I should my mom is worried about fluid around heart. I am 46yrs old.