Would it hurt a 20 year old to take a baby aspirin? my heart races from anxiety especially during the 2 weeks before my period, and i also get sad.

No, but get help: A baby Aspirin is just low-dose aspirin, so probably can't hurt unless you're allergic or have a contra-indicated condition. However, your anxiety and sadness may be a symptom of an anxiety or depressive disorder, or premenstrual dysphoric disorder -- it is very likely that a consultation with a psychiatrist and/or ob-gyn would be helpful.

Baby aspirin: It would not hurt a 20 year old to take a baby aspirin, but baby Aspirin may not help heart racing, anxiety, or depression before your period. It may help lower abdominal cramping that is common in the premenstrual period, though. You could be having other premenstrual syndrome symptoms and need evaluation for their severity. Please consider seeing your physician about this.