What is this weird cough?

Warning: TMI! I came to South Korea about a week ago. Since then, I had very bad jet lag, and did not feel too well. Now, I have a cough. I started my period yesterday, with heavy blood, and my stomach has painful cramps which does not usually happen-my cramps rarely hurt. I am pretty weak and all in all don’t feel well. I have a bit of a fever. Any ideas on what this is? Is it just the side effect of traveling over a lot of time zones?