Lone star circle of care Texas people help!

So... I’m pregnant and I don’t have any insurance atm, last year I had a miscarriage and I went to confirm it at one of their clinics... I understand that your payments are based on your income etc. So my question is Do I have to pay every visit? Do they do the ultrasounds? If so around how much do they charge? Will they refer me to a hospital for the birth? Like I said before I’ve been there just once so I’m kinda lost and I’d like to hear from someone who used them!

Thanks