Hey dudes, I have a girlfriend,and for her past few periods,she has been getting sick.Sick as in like you know,fever,sore throat,cough(sometimes),and flu,all at the same time!

So,what do you suggest I should do? I am really frustrated as I can't have sex with her(in case I get sick too).Please help by suggesting any ways to bring down these illnesses.Slow or fast doesn't matter.But of course,fast will be better.Please do a favor by typing only rellevant answers.

By the way, I am from Chile,America.My girlfriend is from Singapore,Singapore.She is currently twenty.Her sister is also having the same symptons during her period and the sister is aged twelve,going on thirteen.What can I do?