So confused

I don't know what to think , I've been nauseated for about 3-4 days now , some points feels like I just got off a roller coaster, this morning I had cramp like symptoms on my left side only with minor back pains on that side , my stool has been very soft , and I've had heavy discharge about 3 times now I'm 20 and had my last period Oct 23rd , I don't know what to think ...