To test or not to test?

Lindsay
My husband and I just started TTC a couple of months ago. For the past 3 days I've had terrible heartburn, mostly in the afternoon and at night. Could this be an early sign of pregnancy? AF was due 6 days ago but no sign of it yet. I've had some cramping but nothing like normal AF cramping, just pains here and there. I've also been extremely moody which is also not normal for me. I usually have 3-6 days of mood swings before AF starts but this has been going on for 2 weeks now. Everybody and everything irritates me and I cry over everything! I'm trying not to get my hopes up but should I go ahead and take a test???