Oh my dear. No contact will hurt. A lot. It's hard to let go of someone you care about and love. That won't stop for awhile. My situation is a little different. I'm on Month 4 of the end of the relationship, but due to unfortunate circumstances, my no contact just started on Saturday.
Remember that you're doing this for you. Because YOU don't want and won't allow these behaviors in your life. It always helps me to remember that. That I am in control here and that his situation and choices do not dictate what I do and do not accept in my life.
Lots and lots of hugs.