No blood clot??

Hello everyone. I'm on Day 4 of recovery after the removal of both wisdom teeth on my right side. This top one had perforated my sinus cavity. I'm not in any pain, but the socket is super deep and I don't see a blood clot. Would I know if I had dry socket already? Is this normal for an upper extraction? My bottom extraction site also looks okay but there is a blood clot present there.