Hi Everyone

This is a really dumb question but i am curious to know.
My friend and i go walking everyday at lunch time, the flies at the moment are so bad but they do not hang around her and all swarm to me. Today with the humid weather they were absolutely shocking and i am not lying when i say i think there were literally hundreds around me. Put it this way, in between laughing at how bad they were i started to cry (that sounds so pathetic, my emotions are all over the place).
Anyway my question is, am i letting off some different scent now that i am pregnant? I have never experienced anything like it.
Maybe i just smell
Again, apologies for the obscure question, if nothing else i hope you can get a giggle at the silly thing that made me cry.