Got caught with thc in texas

So

This is the dumbest thing to ever happen to me in my life

I got caught with a thc pen that I forgot was in my purse , it was 2 grams.

This happened in irving tx and they asked for my info and let me walk away. They said theyre gonna test it. Literally what can I even do? i have no prior criminal record. Sorry the grammar is so bad ive been having panic attacks