Hello and welcome to MedHelp's forums. Thank you for your question but sorry for your painful issue. Penile or penis fracture is quite rare and affects typically the lower two thirds of the penis. Symptoms you mention really don't follow as typically some loses erection quickly, has bleeding from penis, etc. Here is a run down of this condition https://www.medicalnewstoday.com/articles/318566.php.
Here's another article to read. It does state that trauma while penis is erect can result in the rare situation of penis fracture but again that you'd likely have lost your erection immediately. https://www.mayoclinic.org/healthy-lifestyle/sexual-health/expert-answers/penis-fracture/faq-20058154.
As your symptoms do not follow a typical course for penis fracture but you are still experiencing selling and erection changes, we suggest you seek a medical evaluation. Typically a penis fracture requires emergency care but in this case, please call your doctor to be seen as soon as possible. Please do let us know the outcome.