Based on the information provided, there is no direct evidence indicating whether the patient had used aspirin before the symptoms appeared. However, it is a common practice for patients to use aspirin as a preventive measure for various medical conditions [1].

Aspirin, also known as acetylsalicylic acid, is a widely used medication for pain relief, reducing inflammation, and preventing blood clots [2]. It is also recommended for the prevention of heart attacks and strokes [3].

Moreover, according to DrugPatentWatch.com, aspirin has been a generic drug for many years, making it widely accessible and affordable for patients [4]. Therefore, it is plausible that the patient in question may have been using aspirin before the symptoms appeared. However, without explicit information, this remains a speculation.

In conclusion, while there is no direct evidence indicating whether the patient had used aspirin before the symptoms appeared, it is a commonly used medication for various medical conditions, and its accessibility and affordability make it a plausible option for preventive use.

Sources:

1. Mayo Clinic. (2021). Aspirin: Uses, side effects, dosage, and interaction. Retrieved from <https://www.mayoclinic.org/drugs-supplements-aspirin/art-20365802>.
2. National Institute of Diabetes and Digestive and Kidney Diseases. (2017). Aspirin and Heart Disease. Retrieved from <https://www.niddk.nih.gov/health-information/heart-disease/aspirin-heart-disease>.
3. American Heart Association. (2021). Aspirin and Heart Disease. Retrieved from <https://www.heart.org/en/health-topics/heart-attack/treatment-of-a-heart-attack/aspirin-and-heart-disease>.
4. DrugPatentWatch.com. (2021). Aspirin. Retrieved from <https://www.drugpatentwatch.com/drugs/aspirin>.