Hello I Just Got 2 Teeth Pulled One Was An

Hello I just got 2 teeth pulled one was an upper molar and the other one was a bottom wisdom tooth that was barely any tooth there it was mostly root tip but I got the extraction at 2 pm today and about 30 mins ago I swished with warm water snd salt and I spit. And in the sink was a long bloody lugi. Type thing I'm worried it wss the clot how soon does it take for a dry socket to happen and why does one side hurt and the other side not at all.