hi there, as the cyst has ruptured and the contents have evacuated you are feeling much relief, but you need to visit a surgeon and get it removed and if required the are sutured as if left alone it might get infected and may also recur. For now you can drain it as much as possible and clean it with antiseptic lotion, keep it covered with a gauze piece and take some anti-inflammatory to reduce the pain. Definitive treatment is surgical removal or it will leave an ugly scar. You may also need a course of antibiotics ,take care.