10 weeks, 24 pounds. HELP

I've been gaining weight rapidly since getting pregnant. I was 155 for literally forever until I came off the pill. Then all hell broke loose. I went up to 162 at my first visit, then 171, and now 176! What's going going on?! I'm only 10 weeks pregnant. I'm not terribly active, but my routine hasn't changed since getting off the pill (beyaz). I know some of it is bloat, but it can't all be bloat! How can I get rid of this or STOP this massive weight gain? I'm seriously worried. I've never weighed this much in my entire life. Could it be a hormonal issue? Help help help!