Now I am an au pair holding the J1 visa. I already applied for my F1 visa and I got the I797 C form from the immigration. I am gonna finish my au pair program in August 6 th. But now, i just want to leave my host family in June which means my au pair agency gonna terminate my DS 2019 form. However, I got the letter from the immigration saying they have received my documents and are processing my application. I want to ask if my agency terminate my DS2019 form, am I legal staying here while I am waiting for my F1 visa? If my DS form is terminated, is it possible that my application for F1 form will be denied? Thank you!