Need help!!!

Chantal • Weralove
I was due for my period on Oct 6 then glow told me that I was due on the 11 but my period never showed up and Now it's telling am due tomorrow. Am super confused... I been having a lot of headaches, sick to my stomach, through up a couple of times and my Brest feel sore. Could I be pregnant? When should I test? Been scared to test am hoping I am pregnant.