Should I test? Soo I'm not sure if I should test or not here's the short story: the last time I was…

Should I test?

Soo I'm not sure if I should test or not here's the short story: the last time I was sexually active was September 6th my period was due the 11th or 12th of September I ended up getting a yeast infection (first one ever) a day or two prior to my period start date, now I'm 5 days late my period is always on time should I be worried?