2 1/2 day period

I have had severe acne breakout this past week and a half started feeling bloated somewhat nauseous and constantly tired I contributed this to normal PMS symptoms however I can't explain it but I feel different this time my period had started but only lasted 2 days the first day it was medium flow and the 2 nd day a light flow in morning and then nothing could this be a sign that I'm pregnant or does anyone have any thoughts to what could be going on? I'm so confused I feel like I'm going crazy and my mind is playing tricks on me... Help!!