Hi Bryanna,
Thank you for your reply, I am going back today for a clean and check up so may ask to have an X-ray taken to see if anything was left behind. I didn't have many symptoms before it came out other than sensitivity to hot and cold and some slight occasional pain when biting down. But thinking back through appointments, the infection was probably there for about 2 years!
So I'm hoping it just takes longer to heal... I think the dry socket is healed as I'm no longer in the same level of pain as before and can see a grey/yellow covering, but the socket is still really deep. I will post my X-ray results once I have them.