Adjustment of Status - I-485

Hi guys, I had my interview on monday november 7th, at 2:25 the officer called my husband first, he took 5 minutes with him and asked when we met and what date, then he came outside and called me, and let my husband and our attorney in the room with us so the rest of the interview was with us both in the room, so he asked me same question he asked my husband, and I respond the same thing. He was such a nice officer It didnt seem like it was a interview it seems like it was a group conversation of him wanting to know more about us. So he asked about our son that we have together where I left him, So I said I left him with my aunt, then asked if I had more family here I said yes, Then he asked out street address, and wanted to see our album picture. The interview took around 45 minutes it was great, a lot of laughs as well. He said in the end that he was going to check some other things and then I would get a response. but before us leaving then he wanted to see my passport and said your passport just expires on 2020 so you will have plenty of time to visit your country, and you will get a welcome letter in the mail and then your permanent green card sense we are married for almost 3 years. So we said thank you, and he said was a pleasure to meet you guys and to know how lovely is your family.

So my concern is why on the Uscis online status there is no updates there yet on my case approval? did someone had the same issue and received the green card without having online updates? and also how long to get a green card?
my field office is Boston.
Thanks everyone!!!