Am I pregnant?

I am confused on what's going on in my body April 30 my last period came fully off I believe well on may 3, I had unprotected sex with my ex boyfriend he told me he camed in me I told him about protection but he isn't use it and may,18 my usual period starts but it didn't so may 20,I started bleeding it was irregular it was heavy may 21,medium May,22&23 light bleeding and little spotting may24, spotting and then stopped the bleeding was a light color when it dried it was brown I believe but I was confused because my regular period is 7 days and light and then heavy and then light but I'm tired most of the times,hungry,pee more than I usual,back pain,abdominal cramps,my areola I believe darken,my boobs feel heavier,nausea mildly,I don't take birth control I'm moody and irritated and have mixed emotions can someone help and my boobs itchy a little and I have headaches and migraine and my stomach bothers me sometimes

Am I pregnant?