Idk if I'm pregnant or idk please help me I'm new.

Meylin
Hello I'm Meylin. I'm late for my period 2 weeks. I dnt have any signs for pregnancy like vomit or dizziness. But this week I been cramping a lil and I've been getting heart burns.(the mouth of my stomach burns) I'm too scare to take a pregnancy test cuz I had in the past and I wouldn't like to see another negative. Help me understand what it might be going on with me. Thanks