Both my girlfriend and I have woken up with bites in a line of 3.
I haven't found any bed bugs, but encasing the entire bed stopped the bites from happening. The bites happened 3-4 nights in a row. For me they are so itchy I scratch in my sleep and wake up. There were no blood marks, nothing. The bites for both of us didn't have any dot in the middle to suggest flea-like bites. Any ideas what other type of bug can bite in 3's in a straight line? I am 100% sure it is not an allergic reaction. We started getting the bites after going to a beach.
I also found a masked hunter in the bed bug interceptor after encasing the bed, looks like he was trying to go up on the bed.