Can bedbugs just appear out of literally nowhere? My 6 year old woke up this morning with 8 bites on her chest, scattered everywhere, and she slept with a shirt and pj bottoms. They do not itch her at all. We've lived in the same house for 3+ years, haven't traveled in over a year, no new furniture/matresses, no new people, nothing. We got new carpets in the room from Smart Carpet 2+ months ago in the entire house and no one else has any bites on them at all. I called her Dr. and she didn't seem concerned because they weren't bothering her at all. I plan to keep an eye on them and in the mean time I stripped her sheets/blankets in case. Opinions?
EDIT: It looks like in Google Images that bed bug bites look more like welts, these are just red raised bumps with nothing around them.