Am I pregnant????

I have pcos but I usually bleed almost the whole month with only a week or so in between but I’ve been off my period for almost a month I’ve been cramping and very lightly spotting for about 4 days now the blood is kind of a brown reddish color I’ve been ttc for almost 2 years now I’m hoping now is my time and I can start my family but I’m not sure if I’m pregnant so far in the last four days I’ve experienced lightheadedness dizzyness spotting cramping mood swings and I threw up all my food today please help!