Just feeling like poo

Not neccicarily pregnant. I'm not ruling it out, but periods not due yet so too soon to tell. Plus I don't know that I can even get pregnant, unprotected sex for two years and nothing ... Been ridiculously tired, but I sleep all day. Chest hurts but not bad, just very dull achy like. Hungry but appetite is gone, then the hunger will disappear for a bit too. And now I have mild heartburn. And allergies acting up... Ugh anyone else just feel like complete poo?