This is baby #6 for me.
I started off at 130lbs in a size 5-6 and Im five foot four, in good shape.
I am now 18 weeks along and weigh 133 not in maternity clothes yet, just getting the "baby belly"
So a total of 3lbs so far.
I usually gain about 20lbs total and all in the last couple of months. The most I ever gained was 25 and the least was 13. My babes have run from 6lbs being the smallest to 8lbs 4 oz being the biggest.
As long as it comes off in the end Im not too worried about how much I gain. With 6 of em to chase around it wont be that hard to get rid of. The only unfortunate is I breastfeed and unlike a lot of moms out there, I dont tend to lose a lot of weight until my babies hit the solids.
Best of luck to all the mamas out there!