My new question is: What do I do today? Situation is similar for the bike, so i can't do that. So it looks like it's the pool. Swim, swim.
Actually, I just saw this article/video on the Active Facebook page about proper swimming form.
proper swim form
So I guess I will focus on this today in the pool. and maybe use this week as a time for my legs to recover. Hopefully, it won't mess me up too much to skip a week of training in my 20 weeks. It may end up being a blessing!