Mama, 43 lbs in 5 months is quite a jump talaga, lalo na kung ang baby pa lang ay maliit, definitely worth bringing up sa OB mo next visit para ma-check if okay lang lahat or kung kailangan ng diet adjustment, kasi baka may fluid retention or something else going on. A few of us dito sa mommy group namin, especially mga bumili na ng third, noticed na ang body natin changes differently per pregnancy, pero ganyan kabilis usually nakaka-alarm sa doctors. Your OB-GYN can give you best guidance kung kailangan mo mag-adjust ng intake or if it's normal para sa iyo, wag mo palampasin to check, especially kasi pregnant ka pa lang ng 5 months. Hindi ka nag-iisa sa feeling na yan, pero let the expert reassure you muna bago mag-worry too much