15 weeks and 3 days pregnant overweight not showing yet still have a flabby belly is it normal......?

i always seem to get nervous right before my doctors appointments ugh i realllly wanted this baby its my second pregnancy...we tried for 3 yrs..iam so paranoid that its making me miserable :( i just hope my baby is growing ok.. ive had 2 ultrasounds one a 7 weeks and one at 9 weeks all was well then and i heard my babys heart beat at 12 weeks :) i just hope my little bean is growing ok since i cant feel my uterus all the time my belly is flabby and big..due to being overweight i have lost 15 pounds due to when i was sick and i have changed the way iam eatting...i lost 30 pounds with my first pregnancy from just being so sick...i just forget what its like to be 15 weeks pregnant its been 7 yrs ...