This it sound like im pregnant? pls help?

My first day of my last period was on May 28th.I'm between 28 to 31 day cycle. We had sex throughout the whole month of June. I had some light brown spotting from June 18th to June 21st. I usually don't spot during my cycle. And it was nothing like a period. I've been experiencing light low back pain, light abdominal pain, light cramps on my sides, tired more, peeing more, and just not feeling like myself. And as of today I'm 3 to 4 days late. What do you ladies think?