Are these symptoms of pregnancy?

Hello, well im a 22 yr old married woman, and during these pass few days i been feeling kinda weird. To begin, my period is all over the place i dont know when its going to come. Everything started in the beginning of last week, during that whole week I had the most horrible headaches all week, like never before and I spent sleeping all the time. Also, i been feeling dizzy and light-headed and since last weekend I been having nausea after I wake up. I been peeing more than usual and I feel bloated, this week I been bleeding but very little so I been wearing panty-liners. Is there a possibility I could be pregnant?