Heyi had un protected sex with my boyfriend and he is hiv undetectable and he shot in me do i need to worry ?

Little or no risk: People with HIV on anti-rival treatment, with no detectable virus in their blood, are non-infectious or very nearly so. I would encourage you to use condoms consistently to be extra safe. And as his regular partner, you should be tested for HIV from time to time (e.g. once a year). However, the chance you were infected from this particular event is nearly zero. You needn't worry. Good luck!