I had two days of bowel prep, but mine was Golytely, not Magnesium Citrate. My stuff wasn't flavored nearly enough, even with the little flavor packet they gave me. Yesterday was awful. I did end up nauseous after 2 glasses (had to drink a 1/2 gallon of the stuff), and ended up popping one of the nausea pills I'd been subscribed. It worked, but nothing could help having to choke that stuff down. Took me almost 4 hours to get through the 1/2 gallon.
Today was easier, though still horribly unpleasant. No nausea and I just powered through it to get the 1/2 gallon down in under 3 hours.
Also have to be at the hospital for 5:30am tomorrow. Going to try to head to bed shortly, but not sure how much I'll sleep.
You got through the worst part of it, though! It's a downhill run from here on out!