how do i announce my pregnancy

Ok well this is baby #4..3rd pregnancy..i have a 11yr old daughter and 8yr old twin boys and currently 13 weeks....I've been dating my s/o for 6months...im having difficulty figuring out how to tell my family because i know they are gonna talk s**t because ive only been dating him for only a short period of time..idk why i feel so overwhelmed over it.....(p.s)im 28yrs old and live on my own and take care of my kids without anyones help