Can i have covid-19 if i have been in contact with someone who tested positive ?

Possible: The virus is typically spread from person to person by coughing or sneezing. If you were exposed to a COVID positive person it is possible you could get infection. https://www.fda.gov/emergency-preparedness-and-response/coronavirus-disease-2019-covid-19/covid-19-frequently-asked-questions

A possibility ...: Yes, there is a possibility, especially if you were not following the WHO/CDC Guidelines for Covid-19. Best for now to comply with these guidelines & Self Isolate for 14 days while you monitor yourself for any emerging symptoms especially fever/cough /change in the taste/smell. Stay away from Cold Foods/Drinks. Drink Warm Water/Tea/Coffee & Hot Soup. Aleve/Aspirin/Panadol if needed & See PCP...