I don't know if I can help you. I come from the countryside and grew up in a small village. Fleas and lice were not uncommon when I was young. Let me give you my opinion. Flea droppings are rarely seen, let alone stuck to the bed, let alone a large piece. If it is really a big piece, from another angle, how many fleas does it take to pull out such a big piece? If it is one, how long will it take? Besides, fleas bite people and don't recognize places. Where can I bite? I guess the place where you live is wet or unclean. Now it's summer, and you are allergic. I'll teach you how to do it. Try to see if it works. 1, you quilt or something, wash it if you can. Take the quilt out to dry, don't change it, wash it clean. You can get some medicine. Some pharmacies have doctors' consultation. Please ask the doctor and tell me your situation. Then keep the room ventilated. 3, don't make the bed when you get up, shake the quilt or something.