Ok so this is a big one I tell all new paramedics. I got a call for a 37 y/o female with chest pain. she was in her third trimester with her 2nd child. The first one was a miscarriage. Now she had sub-sternal chest pain radiating left arm to her left jaw. 12-lead showed elevation in leads I, II, and depression in v4 and v5. With a history of cardiac problems to beat the band. So I did the standard treatment MONA. (Oxygen, Aspirin, Nitro, Morphine) When we got to the ER they wouldn't accept the pt Er dr said we had to go to L&D. When we got to L&D and gave report they wouldn't take the pt because of the Aspirin. I got yelled at by everyone who has any authority over me. From the ER doc to the my PMD to my Supervisor and ops manager down to the training officer. The PMD came in to work at 23:30 to yell at me. Apparently in the late trimesters you can't give Aspirin to a women because it will cause a disease that I can't remember the name of sorry. It basically causes the little heart valve that is supposed to shut during labor to remain open. If you ever wanna gives meds besides Albuterol, Dw50, mag sulfate and oxygen to a pregnant women. Call a Doc.