Yes he can.
If you have your parent's permission.
A parent or guardian has to sign a permission to marry.
With parental permission, yes, she can.
assuming you have permission from guardians, "Yes"
No you cannot.
Certainly, if they have the parent's permission.
You need to be worried about the laws of your state. Boyfriend can't take you to another state to get married. First, it's illegal to take a minor across state lines without parental permission. Second, even if it wasn't, you couldn't get married anyway, because you're a minor without parental permission who is not a resident of their state.
You would have to ask permission from your parent/guardian. If they say yes, then you can marry them, otherwise, no.
No. Pregnant or not, you need parental permission to marry.
No. A few years they could, but GA has wisely changed that law. Now, pregnant or not, a minor has to have parental permission in order to marry in GA.
Yes
In most places in the world an 16 year old can marry a 20 year old. But it will require parental permission to do so.