I got off of birth control could i be pregnant if my lower belly is tender?

Could be: Pregnancy is always a possibility when you don't use contraception.

Maybe/not: There is not enough detail in your post to speculate on this possibility. Abdominal tenderness is a vague symptom shared by many conditions. How long off BC? Have you been sexually active without protection ? Are there other symptoms ? You are welcome to start over & provide more information.