Flu like symptoms?

Hayley • Luke 7/15/17; Colt 6/14/19; #boymom 💙💙
I'm currently 4 days till my next period is due and I highly doubt that this is my month, but I've heard of this a little and read some other posts on here about it. I haven't been anywhere where I could really catch a cold or anything but last night I started to feel really sick out of no where. I had a slight sore throat, chills ( I was bundled up in front of our pellet stove with 4 big blankets and still cold! 😢), and a stuffy nose all just like he flu or a cold. I went to sleep and woke up this morning feeling perfectly fine like nothing had ever happened. Now like I said I highly doubt that I'm pregnant bc I just haven't felt it or any symptoms at all, but bc I've hear of this sort of thing happening before other women got their BFP I just wonder if it's possible for that to be someone's symptoms or if anyone else has ever experienced something like that  and gotten a BFP or how common it really is for that to be I guess "pregnancy symptoms"? Or even if anyone else has heard of that happening?