I was abused by my family, what do i do ?

i was born and brought up in a poor family in a Asian country, and i lived in a very rural village, with no electricity, water supply or anything. later my mom was got married, when i was 12 years old, once in a summer we went back to my uncle's house ( my mother's brother's house), it was summer days, also it was a rural village, we used to belongs to a lower caste in the village.

one day, two women ( around 30-32 years old) from a rich upper caste family came to my aunt's house, they told that their milkman had not come and their cows are remained un- milked today, and they were wanting help to get their cows milked, but because they belonged to a upper cast family, and my aunt and mom were from lower caste family so they were not allowed to go their home.

and only my mom knew how to milk a cow, so my aunt got a tricked, he called me and asked me to strip down quickly, i was 12 years and did not want but i was threatened, and i had to strip nude and i had to go on my knee, than my aunt asked my mom to teach those two women, how to milk a cow using my penis, at first my mom hesitated but later she started milking my tiny dangling penis like it was a real udder of a cow, it was a painful and embarrassing experience. and still has very bad effect on me and i don't have normal relations with them, what do i do?