Is there a useful test for Leiden Factor V?

In 1991 I got a pulmonary emolism. I saved my own life by understanding that my doctor who had si
mply dismissed my description of the pain I had just described to her as "nothing to worry about". I found another doctor who sent to a talented phlebotomist for full blood panel . He found that I had Leiden Factor Five. I went back my new doctor who sent me immediately to Georgetown University Hospital for immediate surgery. They discovered a large bit benign endometrial tumor in my groin pressing fdown on my interior vinacava. They performed a long enormous surgery removing the tumor and then scraping out all the endometrial fibers clinging to my entire bowel and abdominal cavity. They removed the pulmonary emolism Then they redraped me and immediately another surgeon placed a Greenfield Filter somewhere in my upper right chest. That was a six hour surgery altogether. I remained in hospital until I was able to walk again. My full recovery took six months. The surgery included a full hysterectomy and so I immediately began recovering from the full hysterectomy with all the related symptoms of menopause. They advised me to take a Baby Aspirin every day for the rest of my life. Around eight months after the surgery I stopped taking the Baby Aspirin because it caused me a great deal of stomach pain and I thought by then I was safe to do so.
It is now 2024 and I am now 81 years old and have remained remarkably healthy by maintaining a very healthy diet and and exercising vigorously every day by walking 3 miles briskly every day. I now live in an assisted living facility and have developed a lump under my left knee. I have had a sonogram in the ER of the local hospital (now living in Easton Maryland). They determined that I have a Baker's Cyst under my left knee. I was sent to an orthopedic surgeon who in serted hydrocortisone In that knee to reduce pain.
I am now worried that I may have another small embolism as well under that same knee. The nurse in my retirement home is reluctant to believe that I have an embolism. This coming Monday I will call my private physician to set up an appointment to have a look at my knee and have a discussion about what to do next regarding the situation under my knee. I am naturally frightened about the possibility of a second embolism under my left knee. And not sure I should restart taking the Baby Aspirin before seeing my personal physician sometime late next week. Has anyone else had a similar experience?