I think I'm pregnant

Candace
I think I'm pregnant! I have been very fatigue for a month and having nausea for about 2 weeks. I have mood swings quite often. But I can't tell if I am pregnant because I don't have periods. I had a period about 2 months ago but I had 2 in 1 month. I get small headaches here and there. What do you think? Could I be pregnant?