With my first two the were similar in that as soon as I missed AF I had gotten sick. With this one it was a lot different. Hardly any symptoms until about the 8 week mark and then it was only a bit of nausea. I was really worried because with my first two I'd vomited at least once a day for about 6 - 8 weeks and was extremely lethargic. This pg has been wonderful, I haven't had a single day off work.