I will be performing umrah inshaAllah tomorrow. For tawaf un Nissa, do i have to be in the state of ihram?

What do you mean by state of ihram? Once tawaf is over, somethings become halal for a person. When you speak about being in the State of ihram, do you wish to ask about the clothing of ihram? Or something else?
After taqseer, two things still remain haraam which is applying perfume and sexual relations.