Confused. AGAIN❗️

Went The WHOLE December Without A Menstrual Period, Took 2 First Response pregnancy Testes. One Was A Blurred Line & The One I Took Friday(1/1/16) Was Negative! Besides The Missed Period, I've Been Sleeping All Day, My Appetite Has Picked Up, Backaches & Headaches.. It's So Depressing & Irritating When Yu Don't Know What's Really Going On & Your Doctor Doesn't Either🤔🙄😔 .. Can I Be Pregnant Already😤