Adjustment of Status - I-485

Hello,

I had my interview August 8, 2017 at Houston office at 1:45. We arrived 20 min earlier we went through security then we gave out interview notice to receptionist he keep the paper thenot he called us just to give us back the paper back. We waited 5 minutes then he called my name again the officer was already there we said hey then we walk with her we did the oath she then proceed asking me his name date of birth where he was born my parents name then he ask him my name date of birth where I was born where did I work then she ask how we met we told her how then after that she started talking to my husband about his work then she said do you have new medicals I gave it to her she opened them and saw everything was good after that she asked about our tax returns since me and my husband filed separately because he has a small business and it's kind of complicated. Then she said you don't have children and we said no then she said well there's no need to have children now. Then she said that we been approved for 10 years green card.... then she went and got some copies of all tax returns then she came back told me that I should get green card with. 2-3 weeks.... I asked her cam you please stamp my passport and she said my supervisor is in a meeting she will have to approve you... Officer was really nice interview was pretty smooth lasted around 40min she was making notes.... My question is I already received approval notice for i130 but I haven't received nothing regarding form i485.... Has anybody experience the same thing in Houston Office? How long did it took you to received green card? Which approval notice you received first?

Any experience will be appreciate