Hi all, went to take a shower this morning and found a cluster of bites on my left side, along with some welts on my back. Looking for some input from people who are experienced with bed bugs or parasites in general. I noticed one of the larger welts a few days ago and assumed it was a mosquito as I had gone hiking earlier that day. All of the other welts had appeared over night it seems. I’m afraid the culprit might be bed bugs so I’ve dug around my room looking for signs. I cannot find any poop or stains on my mattress, I was however able to find some shells along the baseboard. I’ll attach the relevant images of my bites and shells.
Is it bed bugs? If not, what could’ve done that level of damage without me waking up?