Question?

So my period was last week it lasted like 4 days but I only bleed for like a day then I had weird discharge like yellow and brown and small amounts for the next three days? Could that mean I'm pregnant? My period was a couple days early but that happens sometimes. I just thought it was weird it was yellow and then for a couple days now I've been having like clear discharge with like little lines of pink in it. Anyone ever experience this? I've also been really nauseous and dizzy for 3 days straight now.