Have you ever detoxed off of opiates before? I ask because the more times you detox, the worse/longer the symptoms. 7 months of daily use is definitely enough to form a physical dependence. You were on quite a low dose, so if this is your first time detoxing off of the medication you can expect minimal symptoms.
Congrats on day 3! Keep up the good work
sounds like you too the meds without going overboard. I suspect you did not become addicted and therefore would have very mild if any withdrawals. Good for you! I hope your shoulder heals well!