Smile-Labels

I can't understand how to tell.. I m blessed wd baby girl n now she is abt to complete 3months.. as a baby she try to put her fingers in mouth to suck.. tdy my aunt visited to see baby.. dat tym also she did same.. instead of thumb she is sucking her fingers.. coz I knw she is practising... my aunt told if she is sucking her fingers instead of thumb.. ull b having again baby girl only.. ab yeh kya baat ho gayi... isse bhi age ki gender predict hone lagi.. 🤔🤔🤔