How to know if i have sinus perforation or are my wisdom tooth clots dissolving?

See your dentist: It is possible for a sinus to be exposed while removing an upper wisdom tooth due to the position of the roots that protrude into the sinus cavity. If that had happened, you will feel more pain than usual and will notice air and fluids entering the sinus when you suck in through your nose. This can be very dangerous. Contact the surgeon/dentist that did the extractions immediately.