when do I get my first ultrasound??

i went to the late hours doctors office last night to get an excuse for work and i made up stuff like my stomach was hurting or whatever just to get the excuse for work and she told me i was pregnant.. i went home and took two first response tests and i really am. i have no idea about any of this..? when do i go to get my first ultrasound? when can they tell how many and what gender? how do i tell my family! i fell like theyll be very disappointed in me.. 😔 im so lost i don’t know what to do. im only 16 years old, my mom knows and she accepts it and is fine with it. i didn’t mean for this to happen, but i know i can give this baby a really good life.