PPA / Hypochondria

Hi everyone. I am 7.5 weeks postpartum and the last week and a half have been suffering from pretty bad anxiety, specifically hypochondria. I am convinced I have Breast cancer or I am going to die of cancer . Every twinge, pain, any time of feeling around my breast, armpit, chest, side I think it associated with it. I have my annual womens appt on Wednesday and in my gut think it got scheduled to find something wrong with me :( has anyone else gone through this or something similar?