Post retrieval weight gain

BabyK`sMom • IVF miracle born 4/20/17 x2 sweet angel babies 🖤👼🏻👼🏻 🌈 due 3/31/20
It's been over a month since my retrieval (doing a transfer in 3 weeks) and I gained about 5 lbs from the process. This weight will NOT come off!!! My diet and exercise is better than ever, what the heck is going on? Anyone else dealing with this?