Hi so May 7th was the start day of my LAST period . At the end of May I had a few days of spotting . In the beginning of…

Hi so May 7th was the start day of my LAST period . At the end of May I had a few days of spotting . In the beginning of June I took a pregnancy test and it was negative . I've been super tired lately and I've puked once and couple weeks ago and sometimes feel nauseous . It is now July and my breast are so sore and I'm getting these light vaginal cramps every few days and they last a few minutes each time . Could I be pregnant ?