HB-- Keep your head up honey! Make the decision that is best for your body!! Grad school can always wait!
And on a side note-- my old coworker's wife got pregnant and after she got pregnant they found out she had a cyst the size of a grapefruit on her ovary!! They removed the cyst, the ovary, and one fallopian tube--- and 7 months later she gave birth to a beauuuuuuuuutiful baby girl!! Miracles do happen!! So please be kind to your body!! You are strong and I know you can make it through this-- and remember we are here for you and we live for each other!