I'm I pregnant

Hailee • Married June 2014. TTC since Aug. Lost baby #1 at 4 weeks on New Years of 2015.
Iv been having symtopms like heartburn, nausea, acid reflex, headaches, I'm always tired, moody, mood swings, always hungry, and even though my nose is stuffed up I can smell everything. My tumm and from my belly button bellow is all tight. Could I be pregnant?