Pls post your Member Story using the template at top of Members Story section so we can get acquainted with your history with the drug.
Regarding loss of size, this seems to be a common symptom that occurs a few weeks after quitting Fin (the “crash”).
Suggest you get bloodwork per list at top of Hormones & bloodtests section. If if turns out you have low Total/Free Testosterone, you’ll have a good answer as to why (loss of androgens can lead to penile shrinkage).