implantation bleeding?

Alli • Grace 10-8-18 ❤️❤️
I've been pretty nauseous the last week or so and today I threw up. I also woke up with slight bleeding but it was basically gone by afternoon. I've never been pregnant before so I don't know how much is normal. When I found it it was like the beginning of my periods, very light but it didn't last long at all. 
*update- it only lasted a day. Nothing today. It can't be my period right? My period was 2 weeks ago