Am I pregnant? When should I test?

I’m 21 with no kids, lastnight an older man came up to me & said “you’re pregnant” I said what??? He said “I have 5 sisters, I know you’re pregnant.” “When we hugged I smelled it”, I’m 2 days late on for my period, how much longer should I give it for an accurate test? And obviously I know I can’t just go off of “an old man said... so it must be true” bs, but it was just really weird