Should I take letrozole????

My

IVF was postpone because Covid 19 until further notice which makes me believe it will at least be until July that everything goes back to normal or who knows when I live on a state that’s really contaminated with Covid, this is why I think it will take a while for the hospitals and clinics to go back to normal now than been said i went off the pill and got my period like they say I would that’s it. Know my other period just came and I found a bottle of letrozole I have for previous round with it, I don’t know if I should try to take a round just to see what happens idk what to do I just want to get pregnant I’m so tired of waiting. I know if I asked the doctor she will say no but part of me wants to do it what would you do ????