Mrs BB, i also had terrible morning sickness until 16 weeks, and yes i belive sleeping in made mine alot lesser....i found when i had 9am starts i was sick, but if i slept in and didnt start work til 12 or after i was fine... its prob a burst of hormones just like 1st trimester....
i have felt abit queasy the last few days but i think its more to do with bubs squashing my insides and trying to eat the same as i did before with a squashed stomach lol
hope it subsides soon