Usually about 9-11wks is when the placenta starts producing progesterone for the baby instead of your monthly cycle. So it would be normal to lose some symptoms. Progesterone is what makes you sick. That's why many women who use progesterone with ivf will have pregnancy symptoms even if it's an unsuccessful month.
Oh OK thank you ladies I was getting scared with my first I was always feeling sick and this pregnancy everything so different
Its normal they will come back, just relax and b grateful u not throwing up everyday,all day. As long as u r not bleeding most times things r good. Focus on a healthy baby