Had period but possibly pregnant?

Hi ladies. I just got off my AF last week but it was a weird one for me. Not to be graphic, but the overall consistency and color of my flow was off from what's "normal" for me. Anyway, here I am now with extreme exhaustion and nausea (up all night vomiting) and sore boobs. I don't want to test if it's all in my head and let myself down, but I'm feeling very off from normal and wonder if there's something else underlying?