I'm not a doctor, and support going to a doctor... But... Although neither my wife nor I suffer from colds/flu much, when we have here are a few of homeopathic treatments that have helped us...
1... Get a big lime and trim off the green skin leaving the white inner skin part (I forget what it's called). Cut it up into small chunks and boil it until you get a thick, syrup-like liquid. Use it to make tea, sweetened (not very sweet though) with GOOD pure honey (not the crap that is often mixed with who knows what). Drink as often as you feel works for you. Maybe add some boiled ginger water to it. Note that it's citrus, so there may be some interaction with medications... Check to see if there will be.
2... You can take the above with ibuprofen, but you need to be careful not to overdo the ibuprofen as it can cause gastro and other problems. I play squash (a racquet sport) and as I've gotten older the aches have increased. I would take ibuprofen but found that I was taking a lot and read up on it. Now I take Aleve, which has longer staying power and is not so harsh on my stomach.
3... Slice an onion and put the slices in your socks and put them on... Yep, I laughed when my wife first told me this... But guess what... It's a remedy that's been around for a long, long time.
4... The good ol' white rum mixed with a tablespoon or so of the lime mixture in #1, along with the honey... Kind of like a hot toddy... May help with your sleeping, which is always important, as the body works on itself when we sleep.
5... Gargle with salt water, and do it frequently. Use Irish sea salt.
As with all health issues, our gut needs to be cared for as a priority... Inflammation needs to be reduced... Try eating some kimchi and maybe drinking some kombucha drinks. Tumeric/curcumin, red pepper, ginger, and garlic... All great for you.
Maybe once a week I make a mixture of two tablespoons of good (single country) olive oil, half a squeezed lemon, half a teaspoon of turmeric, a strong dash of cayenne pepper, a strong dash of black pepper (supposed to help with turmeric absorption), and a tablespoon of good honey... Mixed up and drink it in one quick gulp. You will make a squinty face for sure... But it's all good.
And finally... If you have a Ninja or similar blender... Get a lemon, wash the skin... Cut up into little chunks — seeds and skin included – throw it in the blender with some berries (strawberries, blackberries, whatever you like) and some good honey and some water and ice. Blend it all up into a drink and swig it back... Great for the liver.
There's a reason why health problems become chronic... The body has other problems that are hindering it from dealing with the chronic problem... Which means we need to not only take care of the chronic problem (put a band-aid over it), but also help the entire body get back into fighting fit form.
And walking a mile or two each day helps with this.
Hope you feel better soon.