Am I pregnant possibly ?

I’ve been getting really bad headaches lately, and I was extremely tired today. Along with bad body aches. I’ve been eating a lot more than usual these past few weeks. My friends have even noticed today my friend goes “why are you eating so much, are you pregnant?” And I drunk this weekend and I got drunk quicker than usual. And felt nauseous AF after maybe 4 shots. I’m supposed to get my period in “4 days” so I’m waiting to see, although I started having some “pms” cramping so I’m waiting until that day. What were some of you guys first sign?