..Have you Heard of Flight and Fight System!?, Dealing with Hormone Adrernaline.
Some women when they receive Shocking News they usually break up and start the cycle right away. This is caused by hormonal stimulation and Excessive Blood flow in the blood vessels, Also Uterus disentegration. Perhaps, You have almst similar case, but in your case you tend to take a dump instead of resuming PMS.
You should Look Online, for more clue and heads-up,
Sio infection I blv, but If symptoms get out of control and bothers you - seek medical advice / phsycho-logical treatment
-BooSt3D