Feels like you are being bite at night in bed but no evidence of bedbugs or fleas?

If you have fleas they usually stay on you so you will detect them. But it is possible you can have bedbugs or bedbug nymphs in your bed but do not know it as they do not stay on you except when having a feed at night usually when you are fast asleep. Bedbugs may not be readily apparent in the earliest stages of an infestation because they only come out from their hiding place to feed off your blood when it is dark and after detecting the CO2 you breathe out when asleep. They first inject an anaesthetic as well as a coagulant into you before commencing to feed. So you will not usually feel anything while they are feeding on you, and most people will not wake up even though the bug may be on you for 5 minutes or more while the anaesthetic is still affecting you. After a bedbug has completed its meal off you it will then crawl back to its hiding place probably before you wake up and only later when the anaesthetic effect has worn off, you may then start to feel an irritating itching where it has been and feel a need to scratch. But everybody is different about how they react some people coming out in painful red rashes which with some people may only appear on them days later, some hardly noticing anything and with no perceptible bite marks on them ever some getting the most maddening itching. The bedbugs' hiding place can be in various places like under the floorboards and not necessarily in your mattress or bed structure. So you may well be completely unaware that a bedbug infestation has started affecting your bed for weeks or months, nor ever see them, even though they live very near to where you sleep. Look out for little spots of blood on your sheets or pillow case or nearby as that could be a sign you have a bedbug problem.