I'm 12dpo. On&off mild cramps in low left abd. BP is low 90s/60s.my normal is usually 118/81 A little nausea today. Breasts a lil tender. Am I pregnant?

Internal bleeding? Your blood pressure going low needs to be investigated to be on the safe side. This could be an internal bleeding related to tubal pregnancy . Call your gynecologist or doctor . If you can not get a hold of them go to an acute care facility to get checked out .