Pregnant or something else ?

Hi! I’m 20 years old & I’ve never been pregnant. I can’t seem to get a clear answer from anyone so I came here. I started my period this month on the 8th & it ended on the 14th. I wrote down all of my St so I won’t have to type everything out. If you guys could help I would appreciate it! P.S. I took a test a few days ago which came back negative, could be too early to tell unless it’s something else wrong