Stomach is really hard and bloated

My stomach has been hurting for the past 3 weeks. The first week I thought it was because of my period coming and it was the next week my period did come then the third week my stomach is still hurting till today (4th) it's keeps getting hard and just like stiff I really don't want to go to the doctor. Idk if I'm pregnant can I be ? I have like 3 symptoms but I doubt ittttttt.