Hello,
Good that you have no sides. Propecia sheds differ from person to person. Some dont get them at all, some get them frequently. I think some people notice and react to them and some people dont notice and it passes.
Usually you have a shed at three months. But if your hairloss gets a bit worse the first 3-6 months dont worry about it, it can happen. If you get regrowth it will be after month 6 to month 12-14.
good luck