Is it normal to have sex with more than one person at a time

haiii i am anu.my husband did not go to work one day.so i went to shopping.when i retuned i came into the house and and did not find my husband.then i saw in the bedroom window.he was involved in sex with my sister.i was not angry on him.then iwent out for a while and returned back my sister was not there in the house.i did not ask my husband a single question.the next day my husband went to venice on office work.six men who were his freinds came to meet him thinking that he was in the house.i gave them coffee and went into the room.then i got afeeling to have sex with them.i removed my saree and put on my red bikini and came into the hall.they were surprised to see my boobs and other things.they came towards me removed my bikini and took me into the bedroom.one licked my pussythe other pressed my boobs.one of them licked my boob.the other inserted his penis into my pussy and it went on.they came to my house till my husband returned.so do think is it normal?