AM I PREGNANT?? READ ** ARE THESE SYMPTOMS?

So me and my man have been trying for agessss we are totally stable and ready for a baby, got ourselves a house and everything. 3 weeks ago we had unprotected sex.. And I am now 8 days late. I feel cramping and a sharp pain on my left side. Little nausea, my nipples have darkened a little and there is some veins showing 👏👏👏👏 I have very light nipples and never seen a vein on my boobs. I'm so fucking tired like Omg. CRAVINGS👏👍 lower back pain aswell. Do I sound pregnant ??? Is it possible ? I can't wait to take a test, I haven't yet. Anyway ladies what do you think? Should I wait until I'm 17 days late to take a test or just go for it now? I am so ready to be pregnant you have no idea.