You are not understanding that you have to be free to marry spouse and immigrate to the US. You can go to jail. You had to declare your marriages on your immigration paper so that is fraud.
You will have to move and be there the required time to claim that you are a resident of the state. You can Google that information. Also with your pregnancy how are you going to look for somewhere to live, move, find new doctors and have a baby
This is normally for kids in Child Custody or some kind of placement due to abuse and neglect and have not been adopted out and about to age out of the system.
The first step is to hotline the abuse and neglect occurring.
You need to prove that you have been consistently paying for the care of your children since 2014. Since your divorce you need prove custody and providing care for your children. Good Luck.
It’s hard to gage from a high crime embassy what to think. I do know woman who are older and did not have any problems but they dated for 5 years before they got engaged. Another couple they were both from the same island.
If your son is over 18 then no. A minor under 18 applying for passport must be accompanied by a parent and permission from both parents to apply for passport.
As others have stated that you were required to remain single until your immigration. Your mother should have notified them when you got married and then you would not be going through this big ordeal of updating your petition.
Jamaica is a country where majority of people file based on what people tell them versus learning the guidelines, so this level of questioning is not uncommon.
I would encourage you to read the guidelines and for Jamaica specific info here are two links:
https://www.visajourney.com/forums/forum/153-caribbean/
https://www.visajourney.com/consulates/index.php?ctry=Jamaica&cty=Kingstone
Good Luck