Hey heather! When i was 7 weeks along, I would get the most awful morning sickness that lasted all day and night. I found between the exhaustion and dry heaves, I needed to get up a half hour to an hour early, so that i could shower, and have time to get my three rounds of dry heaves/throwing up out of the way and still have time to do my hair and walk the dogs if DF didnt have time.
My motivation was i didnt want anyone at work figuring out i was pregnant before I was ready so i might as well adjust my schedule before work and make sure I was on time. It worked for me.. its hard at first, but you doo what you have to :)