5 Days late

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I’m late on my period that usually comes like clock work. The longest it goes without starting is 5-7 days. The thing is i’ve been EXTREMELY fatigued and this is nothing like I’ve experienced before.

Should I take a test or wait a bit longer?

I’m 19 and definitely NOT trying to get pregnant right now but if it happens it happens. I’m with a loving partner of 5 years and we’ve been living together for quite some time. I just would like to finish college first before even thinking about a baby...