Big babies and high fluid. Any one have similar experience?

I'm 34 weeks 2 days with didi b/g twins two weeks ago at the specialist they weighed 4lbs 6oz and 4lbs 10oz and yesterday they measured 5lbs 6oz and 6lbs 4oz and baby Bs fluid level is high has anyone else had what I feel is a big jump in weight in just 2 weeks and what does it mean for the high fluid level? I'm waiting on a response from my dr but haven't heard back yet.