Since several of you have referenced not being believed by physicians, or even disbelief that LC exists, here are a few recent articles in journals that reference the prevalence of LC:

https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-025-22987-8 May '25
"Long COVID affects 7.2% of US adults, with higher vulnerability among women, middle-aged individuals..." (390,000 subjects)
(n.b. that 7.2% of the general population, not just those who had Covid!)

https://www.nature.com/articles/s41598-025-10120-z Aug. '25
"Of 25,000 participants who had Covid, 20% went on to have LC"
Also of note (for the skeptical physician):
"Post-viral syndromes in the coronavirus family were observed in previous diseases related to coronavirus, such as severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS)"

https://bmjpublichealth.bmj.com/content/3/1/e000269 Apr. '25. 40% of Health Care Workers, (meta-study)
"The pooled prevalence of long COVID among HCWs who had SARS-CoV-2 infection was 40% "

Hope this is informative, and useful for your "arsenal"!