Weight gain!

OMG since being sick over the last six months I’ve gained almost thirty pounds it’s rapid too. Last week at the doc I weighed then this week I went and weighed 7 pounds more. What the heck is going on. And I’m generally not a heavy person, but I’m getting there real quick. Does this happen to everyone and why, and what can I do without hurting more to help it along. I’ve been going by the paleo diet per my doc but im not losing only gaining. Does Chiari do this or is the tubby girl in me finally coming out lol… Anyone