Well, I am almost 26 wks and have pretty much continued my normal exercise routine (running, circuit training, turbo kickboxing, Zumba, etc). I do sometimes get some tightening of my uterus and heaviness in my perineum. If I get a bad cramp it's like a side cramp and I just take it easy til it passes then pick things back up. If you feel good in the water I think it is great to do that. If you wait for the cramp to pass and then pick up your pace, do you start cramping again?
Wife to the love of my life, mama to 2 beautiful blessings from God