effect of contaminated food

Im 20 years old .... my servant  unknowingly cooked a food with a contaminated oil which is too old for nearly more than 4 years ... it is coconut oil mixed with herbs used for growth of hair ,(my mom later used it for lubricating purposes)... this happened yesterday ... on eating 2 to 3 mouths of it i foung something was wrong with it and did not eat further .... then only my mom found tat she has used such an oil ... meanwhile my mom also ate few of it ... then immediately we rushed to the Doctor ... she gave us few enzyme tablets and tablets for liver ... i had no other feeling like nausea or anything else ... next day my motion was also normail ... same with my mother's case also .... please tell me whether this will lead to any further problem or should i have to take any further treatment ...