I have had experiences with bedbugs before, unfortunately.

There is no guarantee that you received these bites on QA. Nor is there any guarantees that those are bedbug bites. If anything I'm inclined to think they are not. Bedbugs tend to bite in close areas, not spread out areas. They also tend to bite in a row as they move across your body. A bite here, a bite there and another bite over there in a scattered pattern doesn't seem like bedbugs to me. Mosquitoes, yes. And they do look more like mosquito bites to me.

By the way, cleanliness has nothing to do with bedbugs. Bedbugs are not the consequence of dirtiness.