weird taste

Im 12 DPO today according to Glow and AF is due in 3 days and today I ate chips that I eat ALL the time and they just tasted SO WEIRD! My SO ate one and said they taste how they usually do. Ive also been feeling sick whenever I smell cinnamon specifically and I usually NEVER get headaches but today I had 3 and the past few days ive had them! Am I going crazy or could I be pregnant?!
And im not looking for a yes or no because duh i have to take a test to get that, im just wondering if anyone felt the same before they found out they were pregnant