Could I be pregnant?

So, my last period was on May, 25th and my period after that was on April, 30th, But my period after that was on, April 4. I had sex on my fertile days, this month, and I haven’t had my period, and my boobs hurt a lot, I have like 10’days with that. It hurts on my lower back, it’s light. And I have like light pain in my Lower stomach, and more on my right side, like on my matrix. Could I be pregnant?