<s>[INST] i went to bed three nights ago and woke up with bug bites all over my legs. i thought nothing of it because i was out the night before. but i went to bed the next night and woke up with more bug bites on my back, stomach, arms, and more on my legs. i have no idea what i did or what to do about it. but i seem to only get bitten while im asleep. help me? [/INST] Thanks for contacting Chat Doctor with your medical questions. You are concerned about what could be biting you at night while you are sleeping. Over the past few years there has been a large infestation of bed bugs across the world. Bed bugs hide during the day and then wake at night to feed on people. The bed bugs are hiding in your mattress. They are red flat wingless insects that hide in the crevices of a mattress. They can live for weeks without feeding, and they lay eggs in you mattress box springs and carpets. To fully eradicate bed bugs it is frequently required to have a professional exterminator. You can wash and then Chat Doctor. Hope this answers your question. Please contact us again with your medical questions. </s>