Indiasmum - my nausea started at 7wks and was constant, all day! I had a meltdown when i woke up when i was 9wks and it had completely GONE! I freaked out! I was so upset that i rang my ob and he let me have a scan - needless to say bubby was fine! It stayed away for about 2days and then it came back again and stayed till 14wks! There were some other days in that time that i felt good but more vomit days than not!

Hope this helps, its such a stressful time, call your ob/midwife, that will put your mind at ease xx