Rant!! I haven't told anyone i'm TTC

Kayla
the girls at work see me take my fertility/prenatal drink mix vitamin after my lunch everyday. it's from premama and is supposed to aid in my ttc. i am 24 and already have a little boy. i'm a single mom and have been in a relationship for a little while with someone new. and they asked what my vitamin was and i just said it's premama multivitamin. and they literally took the time to look it up and then say "OMG, that's a prenatal and that's the last thing you need! you know what those do?!".....um yes, i do. thanks. and they kept going on and on about "you're so young and don't need anymore kids and blah blah..." UGHHHHH. so frustrating. just bothers me cause of what concern is it to then if i were to get pregnant any ways?!!
the only person that may even have a say so is my boss and that's because i'm currently dating her nephew. and even then...we are adults and i can make that decision. and i know...don't shit where you eat...but i met him outside of work and it through his aunt.