Should I be concerned?

Alicia • Got married Nov. 8th, found out I was pregnant 12/9... It`s been a crazy and awesome month
So this morning I was working at my computer desk and noticed my neck was stif and started hurting, the pain got a little worse but now it's just an annoying pain. I've also had some diarrhea (sorry tmi) but I looked up these symptoms and a article about listeriosis came up. I know I haven't eaten any deli meat and I'm sure all my meat has been cooked well done. I don't wanna worry but not sure what to do