I have gotten sick every time i smell certain smells and i have had slight cramps

my husband and i have been trying to get pregnant for over a year now. so i started taking prenatal vitamins to aid with conception. then in the last couple of days i have gotten sick every time i smell certain smells and i have had slight cramps nothing like period cramps. my last period was on Dec31 to Jan04. i am about nines day away from my next period. i have never had cramping or nausea before a period could this be a symptoms of pregnancy.