Help! ✨ Experiences, opinions?

So I am feeling awful today (cycle day 26, 10 dpo). I have cramping, super fatigued, my body feels hot. I could assume this is PMS but I don't usually experience these symptoms until right before my period is due, and I usually have 31 day cycles. It would be weird to have this much PMS so early before my period... Could this be early pregnancy symptoms, despite getting a BFN on my test this morning? Help! I'm just so confused and so hopeful...

Back story: I ovulated on the 12th and my husband and I did BD on the 10th and late on the 11th. First month TTC by tracking ovulation with opk.