weight gain vs. water weight

how would someone determine how much of their weight gain could be water retention? Im swelling like all hell and have gained a considerable amount in the last month. Im a little concerned that all the weight Ive gained thus far is mainly fat. I walk 40mins a day and eat healthily with occasional treats but still gain a lot. Doc said its a side effectfrom my meds and possibley from just being pregnant.

Any major gainers....55 lbsand up who had baby and didnt have a ton of weight left over?

You honestly won't be able to tell for sure until you have the baby. Most of the water weight comes off almost instantly.

Thank you. I guess Ill find out soon enough.  

I agree with what Monica said. Do your ankles look swollen? That's a good indication that you have a lot of water retention. I lost a lot at delivery. My Mom did too (she gained 80lbs, and lost 40 with delivery by 2 days pp with both her pregnancies). I gained 60, and lost about 25 give or take with delivery (and my baby was only 5lb 8oz.).

yes, Im very swollen...from the knees down. Almost as soon as I wake up every day now.

I hope to lose so much weight so soon.