Very Upset 15lb gain

OK ladies this is the deal I lost 23 pounds and I ended up getting pregnant when I couldn't before. Now I'm only 26 weeks and already gained 15 pounds. At first i did not gain anything and could eat whatever I want but it caught up to me. I'm very upset and have the urge to diet which I know I can't do, however I'm cutting back on my extreme food intake.  I really do have a ton of problems right now aside from Pregnancy but I need to focus on myself and have a healthy pregnancy. Is anybody else in the same boat or similar??!