I began similar symptoms - sore throat, headache, runny nose - last Saturday (i.e. 8 days ago). Tried home remedies and otc things but eventually rang local surgery from my bed on Wed; by then I had developed a racking cough. On-call Dr phoned back, went through my symptoms, then told me it was either flu or a cold with flu-like symptoms and that there is a lot of it about. Yes, I did have a flu jab.
She checked that I do not live alone (I don't) and advised Day Nurse and Night Nurse. I am on the second pack, still unwell and finding everything an effort, including showering and dressing. The GP told me it would take 'quite a long time' to get back to normal, reminding me that I am 70. In fact, I was wondering about starting a thread asking for advice on how to recover from flu.
I wrote one Christmas card yesterday, then had to have a lie-down and a nap.
Sorry, Missfoodlove, this is not what you wanted to hear. I hope you have more stamina and resilience than I have, and a different bug. Get well soon.