Olive oil as lubricant

Me and my SO have been ttc for baby#1.. We have been using olive oil as a lubricant as we heard that to be a natural sperm friendly lube... But haven't got pregnant still.. So I was just wondering wether is it correct to use olive oil as lube during ttc... Has anyone of u got pregnant by using it, or any other natural oils as lube?? I am desperately trying.. Plz suggest anything else or any thoughts if olive oil is safe.. Thank u!