Aw mama, 11lbs in a month is quite fast talaga, kaya okay na i-mention ito sa OB mo next checkup para sure lang na lahat okay with you and baby, sometimes rapid gain can be water retention or other stuff na kailangan i-check. A few of my mum friends gained a lot din in second trimester tapos nag-slow down na later, so hindi ka nag-iisa dito! The thing is, you shouldn't intentionally diet or lose weight while pregnant, pero focusing on healthier food choices (more protein, veggies, less sugary stuff) instead of restricting calories actually helps both you and baby. Kaya please let your OB guide you on this one, ate, they can give you a safe plan based on your situation kasi may third baby ka na, the body works differently each time! Sending you hugs, ang glow mo pa rin naman, promise.