Telling my parents

I'm 11+4 weeks today and I keep having these dreams telling me that I need to tell my parents. My story I moved out of home just after I turned 18 with my boyfriend now fiancé which I love we are now 21. My parents weren't happy with me when I did move out and haven't been happy with my partner because of it and blame him for me moving out. Anyways so I know I need to tell them  but when is the right time. My partner thinks I should wait but how much longer do I wait and I would love for him to be there with me when I do tell them for support but I don't want them to start ripping into me and him about it all, what should I do ??