How many months or weeks

Hello ask ko lang po if July 12 po last nang period ko tapos nag pt po ako nang August 19 and it positive how many week na po kaya yung baby ko. Takot po kasi ako mag pa transviginal kaya siguro by nov or dec nalang po ako magpapaultrasound. thanks po#1stimemom #advicepls #firstbaby #pregnancy