Hello ma'am, sorry to read about your troubles!
Strep is a bacterium and COVID is a virus. One cannot cause the other
That being said, throat pain is one of the main symptoms of COVID, but this is usually temporary
If not already done, I highly recommend nasal hygiene with saline solution such as Hydrasense or Sinus Rinse, which can be done as often as needed during the day and at least 30 minutes before bed. It's a little uncomfortable but works extremely well!
You can continue the lozenges if desired, and take acetaminophen (Tylenol and other brands) for prolonged relief of throat pain, and I encourage you to drink plenty of fluids, cold or hot as you prefer.
If your symptoms persist for more than a week or get worse, you should see a doctor.
I hope I've been helpful, so please don't hesitate if you have any further questions
Tom Samaha, pharmacist