Morning sickness

Im about 6 weeks pregnant and today has been the worst day by far. For starters i weigh myself on a regular basis. Before i found out i was pregnant i was at about 150. That was a little of 2 weeks ago. Today im at 140. Ive only had 2 vomitting spells. But today has been horrible. I have been nausea all day and havent wanted to eat anything. I know i must eat but i was wondering has anyone else felt like this. If so what helped?