Not a bedbug or stink bug it is a type of beetle probably a grain weevil of some sort. Check and grain food boxes or pet food for more and throw them away
Only grain I keep around is a 25-pound bag of rice. I use the bag every week though and subsequently rummage around the rice to see any obvious signs of contamination. I do have flour at the moment too but I almost never use flour for anything so it's a rare time for flour to be in the townhouse. The kitchen is pretty spotless though, would they travel ~20ft from the kitchen to the bathroom?