Im pregnant 4 weeks almost 5 on monday!?

im 15 years old and forget the dissing im ready so just answer the ??? alright now im 4 weeks pregnant 5 weeks on monday i've been having sleight cramps not severe at all and no bleeding i quit smoking cigs and am trying to eat more healtheir and im taking prenatal vitamins are the cramps normal? am i at a risk of having a miscarraige?? i no lots of 15 year olds that are pregnant and that are alot smaller then me and there pregnancy are healthy and i want this bad theres were accidents and one more question when will i get morning sickness i no im pregnant but when will the symptoms show?