I got a job in limpopo and i was advised to do covid19 tests. i did tests on 5th of june, results came negative. i went to where i was working on the 10th and i met my colleague whom has recently tested positive. today is the 25th, i have no symptoms?

Exposure: Since you were exposed to this person 15 days ago, you're past the recommended 10 days of isolation( although he may not have been positive then). You have had no symptoms. You are ok to circulate but practice social distancing,wear a mask when appropriate and wash your hands often. It's up to you whether you want to be tested again but I expect you to still be negative.