Do you get sick more on your period?

Catharine • There are two ways to behave: as if nothing is a miracle...or as if everything is. -Einstein
My period always seems to show up to the party with a plus one like "Hey girl! I just dropped by and brought this cold!" or "haaaayyyy! Bacterial vaginosis in the hawse!!!" Currently Im on antibiotics, exhausted, trying to juggle my job and keep my boyfriend happy and my period is due in two days. I know it's going to be awful. 
I was just wondering, does this happen to anyone else? Your immune system just kind of shuts down on period days? Or is it just me?