Let me explain why I asked.

The most important thing now is no contact between you and him.

There are two risks in this regard:

1) the risk of his contacting you
2) the risk of your contacting him.

Your blocking his pathways of contacting you such as blocking chats serves to reduce (1) above. If he still finds a way to contact you you might be able to get the government to protect you from unwanted interaction with him. Had the nosebleeds been documented, that would have made it easier to get a restraining order.

The government cannot protect you from yourself in this situation. The government protects people from acting against their best interest only in extreme cases such as forcing an inpatient hold if you have a plan to kill yourself. Your case is not that extreme.

So to reduce the risk of (2) you need yourself and you have done great by not calling him for almost a whole week. You also might use the help of people who are kind to you. Even posting here would help. And, if you have friends who are kind to you, you can call them and either just chat the way friends chat, or, if you have told them about the situation, you can ask for moral support to help you not contact him.

A restraining order works unilaterally. It does not restrain you from contacting him. So it is your responsibility to not contact him.

Eventually it will become second nature not to be in touch with him. It will not hurt forever.