Earlier this year, probably around February of 2015, I started to wake up to bug bites. I usually get them on my hands, arms, and shoulders. I sometimes get them on my back and feet too. Sometimes they are in a line or clustered, sometimes they are just randomly on their own. They get pretty swollen and sometimes even look like welts. Here's the weird part: I only get them when I sleep at my boyfriend's apartment. I don't get them when I sleep at my own apartment. The even weirder part? My boyfriend has never woken up to bug bites before. I'm the only one who gets them. I have wondered if maybe he has bed bugs, but why would they only bite me? And if he did have bed bugs I would suspect his roommate would also have problems by now since this has been going on for roughly 8 months. I would also suspect my roommates and I would experience problems at our apartment since this has been happening for an extensive amount of time. My boyfriend and I both have pest control services at our apartments. We checked his mattress for bugs and didn't see any apparent signs.
Is this a bug that is biting me? Or a weird rash of some sort?