If my blood pressure is normally 95/70 is it bad when it is 88/45?

No problem! People are often concerned that their blood pressure is too low. There is no cause for concern if you are not light headed or dizzy! if the pressure is so low that blood is not getting to your brain, you will get dizzy, and then it is a problem!
Maybe. Your blood presuure maybe have problems now, please take a ambulatory blood pressure monitoring and heart exam.