Sore nips?

Keighlen
I am 8 dpo and I noticed today that my nipples (sorry tmi) are feeling somewhat sore and achy. Did any of you have this sort of symptom as an early pregnancy symptom or am I just getting my hopes up and it's too early? I'm also having slight cramping on my left side. But I'm not suppose to start my period for another 8 days.