Hello

Im am 18 and me and my parnter are sexually active, the last month or so i have put on my weigh in my stomach only it looks like i am pregnant now. I have feel sick by the smell of alcohol when i use to bw able to drink alot some foods make me want to be sick and i always crave nachos and coke i have been feeling like my tummy has turned and i feel sick after it. I am super tired alot and get back aches. I had my period last week so that should mean i am not pregnant

Can someone please help me?

***UPDATE***

Test came back negative