Private to GOV subsidies is it possible?

Hihi Am a new mom to be here, and i am just wondering as it was an unplanned one but my partner and i decided to keep the baby. I am 5weeks in, but i walked into Thomson for first virginal scan and there will be a follow up 10 days later. Is it still possible for me to go get a referral letter to opt for the GOV check ups/ subsidies in this early stage? #firsttimemom