If It Doesn’t Hurt, Is It Safe To Assume Its Safe

I just added another .5cm . I feel like I’m nearig my maximum stretch. It doesn’t hurt at all, maybe alittle tingle in the ligament. No pain afterwards. So far dick works like normal. Only been at his new length for a day but I have full eq. Given that info is it safe to assume that it’s a safe stretch? My biggest fear with extending is stretching too far and causing scar tissue to build up.