Hello Madam, I am sorry to read about your troubles!
After researching, I have not found any over-the-counter product that is effective for this problem.
In most cases, low libido is a symptom of another problem, such as fatigue, a more difficult period in a couple's life, or anxiety, to name a few.
To this end, I invite you to discuss it with your doctor and/or a psychologist. This is your best starting point. Here is the website of the Order of Psychologists to start your research: