I am younger and decided to experiment with anal sex, using a safe-ish object. Anyways afterwards I was fine but then my rectal area starting aching slightly, I ignored it. Since then my stomach has been upset and I have been flatulent and have had a rumbling stomach for about 2 days. I has slight consitpation and the pain has basically gone but still have flatuance and a rumbling stomach. As well as occaisonal coldness feeling on my stomach.