Am I pregnant or just early pms? (6dpo)

My period isn't due for another 12 days. I am 6dpo today. I had slight spotting the other day... My boobs are sore, I cannot wear my bra or a tshirt or touch my nipples. They feel burning and hurt so so bad, and they feel super full. I've been nauseous and woke up at 3 am to horrible back pains. I sat here on my bed and felt a sudden urge I had to throw up. And I did. I never puke. It was weird for me. I've been sleeping a lot lately. I just slept for 13 hours and 17 minutes according to my smart watch ⌚, I've also been peeing a lot more tooo. And my appetite is really high I feel like I've been eating and don't get "full". Could I be pregnant? Or is this early pms symptoms? I'm making myself crazy by searching all this on Google...