When to take a pregnancy test?

Maddie

So 45 days ago I had unprotected sex during the most fertile time of my cycle. My period was due a week and a half later but never showed. After I missed it I took a test and it was negative. Then 16 days ago I had unprotected sex again 3 times and my period has still not come. It is 16 days late. When should I retest? (So potentially I couldve gotten pregnant either of those days I think?)