Sore nipples 8dpo?

Just curious, I'm 8 dpo and my nipples are sore! I've never had this, it was really bad when I set them free from my bra tonight. About 3 days ago, 5dpo, I had cramping on my left side all day. It dissipated towards night time and I woke up the next day super bloated. I took a cheap test today and it was a BFN. But it's only 8dpo. My cervix is still super high and feels like it's getting softer. It's def closed. What do you guys think? It's our first month ttc, just off bc. I would love it to be pregnancy, but I'm not super hopeful as its only our first month. We dtd almost every day this month though. Lol