Hello sir,, when did do drink dettol,, and how much you drink dettol is important to guess the possible symptoms now. And dettol causes corrosive action (just like phenol) on your oral cavity, throat, and gastrointestinal track and has other action on your central nervous system, so it's pretty common to have throat pain or abdominal pain along with some blood vomiting and passage of black coloured stools. Most of the times it is mild,, and patient needs only supportive measure,, consult your general surgeon he will help you with that.