Dear Bluemoon,
It's an incredibly tough situation you're in, but it isn't the end of the world, you will get through it.
I left the org for the first time when I was 17 and was in a relationship for a year. During that period I thought I was pregnant several times and I was very messed up about the decisions that I would have to face up to if I was positive, decisions that I just wasn't ready to face so young. So you're not alone, so many of us were in similar situations as you once.
It's difficult for you to be logical right now, but one thing you have to realise is that you aren't going to be in control of all the decisisions. You're possibly in a better situation than your GF since you are out of the org, and have had more time to deal with the shunning and rejection. Your GF has so many decisions ahead of her, and all ones that will need to make quickly.
The truth is that even if you weren't raised in a JW family and were 17 and pregnant this alone would be a difficult thing to have to cope with, even non-JW families are too happy when their 17 & 18 y/o children are having children. Your situations are especially difficult because you may not as yet have formed your own personal beliefs on things like abortion. And your GF probably isn't ready yet to give up her family in the way that you were forced to. The comments that have been made about living up to your committments is absolutely true. It's too late now for regrets you just have to do the best you can with the current situation. No matter what decisions you make you will be forced to deal with them indefinitely, either physcially or psycologically. You will be much more honorable to yourself and also to the people such as your family who have cast you out if you stand by your GF in her decisions. Unfortunately as unfair as it may seem your GF is possibly faced with the biggest decisions, things which ultimately you may not be able to influence. But if you offer her your full support she will have all the options available to her.
I really feel for you both and the very difficult situation you're forced to deal with, on top of all that you have had to bare with growing up in the org. It is an incredibly common situation you find yourselves in amongst teenages in the org. If only the org were realisitc and not repressive, many situations like yours could have been avoided. But if you be true to yourself about your thoughts and feelings and what you can handle, you will be much stronger and a better person for it in the long run.
I wish you all the best, please keep in touch...luv V**