Ladies I need opinions

Heather • I'm a 27 year old who is happily married to my best friend and the love of my life. I'm crazy about my 5 Fur babies. We are expecting Baby #1 March 12, 2017. :)
Hey ladies, I'm just wondering if I should wait till my period to test of test now? This past week I've been extremely tired, nauseous and headaches.