Different to the first two

jill • I'm 28 in March expecting our 3rd baby in September I have been married 5 years and been together 10 years in September also we have 2 children already a 4 1/2 year old son and a 3 year old daughter
I'm only 6-7week pregnant but with my first two pregnancys I had sickness and passing out from week 4 till 5-6 months iv got a boy and a girl currently is there any reason why this pregnancy is different as I'm not sick not passing out apart from cramping and slight bloating I don't Evan feel pregnant? 4 ppl have said maybe twins?