Patient is a 25-year-old G4P2103 with EDD 2/17/25, who was admitted to the hospital on 1/20/25 at 36w0d due to 1-week of petechiae and easy bleeding/bruising. She was found to have new profound thrombocytopenia on admission, with platelet count of 5k. The presumed diagnosis is ITP, either as a primary autoimmune condition or as a vaccine adverse event. She remains admitted today (1/22/25) and work-up for alternative causes of thrombocytopenia, but no other cause has been identified thus far. She is receiving steroids and IVIg with the goal to improve her platelet count prior to delivery.