Ok AF is 2 days late and I think i may be pregnant

I want to test...been wanting to but so afraid of a BFN....I've been really nauseous lately and eating makes it worst. I've also been tired more then usual...my husband is for certain that we are pregnant I think I will have him go buy at test while I'm at work.

I heard the best time to test is the mornings when you wake up but I work midnights and not off till 7am so what time of day should I test?