cravings and baby's gender

I crave both sweet and salty but mainly sweet. Anything chocolate and candies I crave. I also like popcorn and cheese crackers. Morning sickness didn't start until 8 weeks but was horrible vomited at least once a day and lasted until 14 weeks....driving me crazy what the gender is?! Thoughts? I'm 19 weeks now we find out next week. Heart rate was 152 at 6 week ultrasound and now it's 148-160