Pregnant!!! How to tell my parents!!

Okay so 3 years ago I got pregnant by my boyfriend. My parents did not take it well and I went through so much stress with them kicking me out and not knowing what to do I ended up having a miscarriage. My boyfriend was with me at all times and it broke his heart.

Now we are pregnant!!!! I am 25, graduated with my bachelors....I am a kindergarten teacher. Even though I feel like I am set to go I dont know how to tell my parents. I think back of how it went before. Last time I was 6 weeks and i had the miscarriage and now my boyfriend and I decided to wait till more weeks pass to tell them. Tipsss!!