Probably just overexertion. [Does she notice Luka staring? Yes. Yes she does.]

Careful not to get your heart racing. That could make the headache worse. [LITCHI...] So, headache and a bit of chest pain? [She jots that down, wheels herself closer, and stands up, reaching for the stethoscope around her neck.]

Lift your shirt, please. [So that just happened. Litchi lets that hang in the air for a second. Then continues on as if nothing had happened.] Now, how long has it been since you had proper rest? Everyone was telling me you overworked yourself, but they wouldn't tell me how badly.