Can i get help in my harassment case by ex boyfriend without my family involvement

I was in a relationship for around for 7 years but we have been having breakups several times but this time i have finally decided to have complete breakup its been around 2 months having breakup with him , but he is just harshly forcing me to stay with him, he daily calls me harasses me and warns me like if will not be his then he will hurt me or he will not let me live a peacefull full lifee . Our familes dont know about our relatioshiop so hee also threatens me that he wil create a scene at my house, he also warned me regarding shooting me and leaking my personal and private memories and photos , i also cant share this with my family as i cant loose my identity . thats why i put my issue here i hope you understand my problem as i cant live my life freely i am always in state of fear and stress i dont want him to destroy my life , and i am on a career path my parents have seen so many dreams for me i cant leave them behind and cant let anyone destroy them so please hellp me and guide how can i make him silent and how to shut his nuisance