I gained weight from day 11-14 and then began losing again. This was during a 21 day fast. The reason we gain weight is because our hormones are FUBAR and the only way to correct this is with consistent fasting, Keto diet and depending on what hormones are out of wack supplements. I really recommend you do a Silva test to test your hormones.
Fasting is really difficult the first times. Each time is different and easier. I have Hashimoto’s and arthritis. I am not sure how that contributes but my first fast was for 21 days and I was sick (flu feelings/headaches) for the majority of the time. I powered through but haven’t done that long of a fast since. Lol I shouldn’t be afraid but I am! I was sick. I have done several 10 days fast and after the first two days I feel fine and really don’t have any issues other than shortness of breath when exerting myself. I believe I am still very ill with my autoimmune issues so it isn’t going to be a quick easy fix for me.