Chance of Pregnancy when period starts the next day?

Jacinta
Hi guys, sort of new to this app and am exceptionally bad at expressing myself but advice would be welcomed 🙈
I had unprotected sex (he pulled out and I'm almost 100% sure he did not cum in me) on the 23rd of October and got my period as expected on the 24th-28th.
I know I am being totally irrational here but I just need someone's opinion on the possibility of pregnancy
I have taken a test as of 27th which was probably too soon but I was panicking.
I also currently have a bout of tonsillitis and an ear infection and the pain in my stomach makes me worried even though I'm fairly sure it's nothing, but I'm google doctored symptoms (word of advice don't do that HAHAH) and everything I have is related to pregnancy as well as tonsillitis... however it would only be a week now and that would be far too soon to be experiencing symptoms? 
My friends are sick of me panicking so I'm here just for someone to lend a reassuring hand and much needed girl advice xox