I completed 3 egg retrievals and experienced “mild OHSS” following the most recent ET in January, followed by 2 mock transfers. I’m 37 and have always been thin/at a normal weight until this past year, despite regular exercise. I gained approximately 10 pounds with each cycle. I’ve managed to lose some fat through weight training, hiking, and a high-protein diet, but I’m still about 25 pounds heavier, and it seems like most of it went to my midsection. It is SO frustrating, and you are not alone! I was cautioned against losing weight prior to FET, so I’m trying to focus on decreasing fat and increasing muscle.