I agree with the posters suggesting you ahould move back to Oz while pregnant. Could your family not give/lend you the money you need to get back? Sounds like something you need to get the ball rolling on fairly quickly if you want to?
I wouldn't worry about the drinks, it's such a small amount, many people have the same or more in pregnancy and it's totally fine. The Drs have scanned you and have said the baby is healthy, so I would stop worrying about abnormalities.
You seem to want a certain lifestyle in motherhood but at 32 you aren't making any moves towards it? You will always be able to find stories of people successfully having babies in their early 40s but for a lot of people it isn't that easy. As PPs have said we do have a ticking clock so these things can't be put off indefinitely.
You have said "I would hate my boyfriend if I couldn't get pregnant again"
Which, aside from being very unfair as he isn't pressuring you, indicates that there's a strong desire to be a mother at some point?
"I wish I had my shit together"
Only YOU can get your shit together, and I would suggest that, with or without this pregnancy, you are under time pressure at 32 to get to the middle class suburban lifestyle you would like before motherhood.
What was your plan for this before you got pregnant?
And you have mentioned several times that you're in a foreign country in a lower socio-economic area. This is easy to change. It will be infinitely easier to change now before the baby is born if you are going ahead with things.
I get the travel thing, the world is big and beautiful. But I am 32 too, and I'm looking at the fact that I can draw my pension from 55, what investments I can lay down for my future so I have a decent standard of living, making the odd overpayment on my mortgage....yes, it isn't as exciting as endless travel, but I will be old one day and will need a roof over my head and some sort of income.
I plan to change my working hours to term time only from next year and then house swap with families all over the world during the school holidays. That way I get to scratch my itchy feet and still have security and the deep roots that are important to me.
I think you need to try to calm down, take a step back and think about the big picture.
So yeah, I would move back home, keep the baby and start putting down roots, but it is your choice. Craft the llife you want.