I have 3 kids.
First child----NOTHING!
Second child----almost always n* at some point during the day with no rhymn or reason. Never v* though.
Third child-----A couple waves if I had an empty stomach. I would slam some peanuts and it went away.
The two slightly n* pregnancies began at 6 weeks and was gone at 12 weeks, never to return.
If you do become to n*, ask your doctor for Zofran that melts on your tongue. Its safe and it works.