Hi Mummytron
Those symptoms don't really sound like peri-menopause to me - if you've been ill with a virus, for a few weeks, and if you didn't test for Covid this could be the culprit. Because it is now mainstream most people don't test any more so it is far more widespread than one would think.
First thing is to see what the results of your blood tests are - what have you been tested for? Those symptoms could have all sorts of causes. How is your diet and exercise regime generally? Obviously if you feel tired you won't have much motivation to exercise, but as we apporach peri-menopause it is important to get ourselves into the best possible shape - re weight, diet, exercise, alcohol etc for the this (long!) next phase of our lives.
Peri-menopause and symptoms may be a different issue. How often are your periods and how long have they been significantly irregular (eg cycle length differing by a week at least each time)? Unless you are taking medications that may suppress them, like some anti-depressants, usually the first obvious symptoms women develop that can be definitely attributed to peri-menopause, are hot flushes and sweats. Do you have any hint of those?
Depending how old you are and your blood tests,as well as other symptoms, you may want to consider HRT, but I would find out the causes of and treat your other symptoms first if you are able to.
Hurdity x