My period isn't always regular. my cycle is usually 29 days, but has been as long as 44 days, i'm on day 37 right now. should i take a pregnancy test?

Anytime you like: Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.