I'll probably avoid the pool until later in pregnancy for that very reason. I feel like I end up spending two hours at the gym just getting ready, getting in, then yadda yadda. But we have faculty/staff fitness classes, one of which is aqua aerobics, and I agree with pennywhistle that it sounds fun so I'll probably do it in the summer when everything else feels terrible.
I did rowing, deadlifts, walking lunges, dips, and double unders (jumping rope) at the gym today. I got up to 10 reps of 70# deadlifts, which is the heaviest I've gone since I've been pregnant. It felt pretty good. I could have gone heavier, but I would have had to switch to a bar (I was using kettlebells) and didn't want to mess around. So, overall I'm feeling good about the workouts and general strength stuff. I need to make sure I'm doing cardio at home for recovery. Part of this crazy weight gain this week I think is that I've been doing less cardio at home than I was before. I need to start an actual training log so I can look for patterns like this. I have one at the gym, but I only write down my gym workouts. I'm also exhausted, which is why this post reads like a really boring stream of consciousness. Sorry!