Hi, I am about to get surgery to remove my sebaceous cyst next week. I had it drained before and now it is back. It is on the back of my head about 3.5 cm Tonight I experienced something strange. There is a soft tissue fluid like fingertip size that i notice tonight. i touched it couple times to make sure that i wasn't bleeding and the smell of this fluid kind of stinks. I don't know what to do right now. These days i notice i've been getting this dry crust stuck on my hair and tonight i notice the size of the soft tissue where i can touch . Should i let it dry and let it become dry crust ? Put a bandage over it ? Any suggestions would help greatly. Thank you