Symptoms... a little TMI 💩💩💩

So I'm estimated at around 12 weeks... but that could be wrong. 
I haven't experienced a lot of nausea / vomiting this pregnancy, but this past week I've been having diarrhea after 75% of my meals. 
Sometimes I'll be fine but have the same thing later and get sick. 
I don't rarely feel nauseaous but my stomach gets upset often. Usually I just get a gurgaly stomach, and eventually end up running to the restroom.
Is it normal not to experience vomiting/nausea but instead have issues with diarrhea? 
It it weird that I haven't experienced any of this until pretty recently?Â