I Am Taking The Shots And Medications Already For The

I am taking the shots and medications already for the final ivf step. I have 4embyos frozen and hopefully by the end of this month we will finish with a positive results! I am very worried because i have been smoking marihuana since i was 18 and i am 38yrs old now. I am very stress to the fact that i keep smoking every other day. If i get pregnant i know i will NOT do it again. Am i wasting my time and money? Or do i still have a possibility of becoming a mom?