How do you kindly tell your mom?

So im the oldest out of my siblings. im 23 And my bro is 17 and my sister is 13. My mom has been telling everyone shes ready for a grandkid and cant wait to be a grandma blah blah. It gets so annoying because i dont really want kids , Im not a kid person, im a grind and work hard for what i want kinda person... So shes getting really annoying and everyone tells me when im havin kids.. but the answer is I wont be having kids!!!!! 😳 I do have a boyfriend and we talked about this and we came to the agreement that we will not have any kids , just pets and thats it. I dont know how to tell my mom and everyone kindly that Im not going to have any kids ever. She will probably get mad at me or something but i really dont care. Some people just dont want kids and thats me. Im not being greedy or petty im just stating my future an what i want is a successful life. Should i just not saying anything to no one until im like 50 lol They will probably realized that i aint getting. pregnant and all this shit anyways lol ...