Oh, Kristin! I'm so sorry to hear you've felt ill. and Greg, too. I felt queasy the first day or so home but it felt like echoes of the seasickness. It went away. No symptoms in the kids. I do remember Elena saying she felt "seasick" after she got home and wonder how she's feeling now.
I don't know if it's worth pondering but one day when I turned on the sink to wash my hands, didn't look down for a sec, and when I did, my first thought was how did my hands get so dirty: in other words, filthy black water was coming out of the faucet. I let it run and finally it ran clear. But I worried about the times I rinsed my mouth with that water and what may have been in it.
I sure hope you guys feel better soon. :(