You are getting some good advice on your body needing to go thru a healing phase, but a rapid weight gain warrants a trip to the doc just to rule out anything else going on, especially if most of the gain is in your abdominal area. If the doc finds nothing then you may just need to be patient for a month or so til your body heals a bit and adjust to your new way of eating. Also keep in mind that childbearing and age mean that what worked before may need some tweaking -- the older I get the less cheese my body can tolerate without gaining. Just something to think about