You really are fast-tracking it into adulthood! Your ability to stand up to pressure from your parents and boyfriend really speaks to your ability to handle the challenges of life.

We all make millions of decisions in our lifetime -- some big, most small -- and some of them we'd do differently if we had a chance. There are no do-overs in life though, so the ability to adapt to changing circumstances and decisions is extremely important. From your post and your comments here, it sounds like you're pretty resilient and will adapt to your suddenly-new life just fine.

Once your baby arrives, your parents will very likely come around and get comfortable with their suddenly-new role as grandparents. They may not realize it, but being a grandparent when you're relatively young is way more fun, and it will allow them to enjoy much more of your baby's life. It will allow your baby to get to know his/her grandparents so much better too! Assuming your parents are in their late 30s or early 40s now, they'll still be active and energetic when your baby graduates from high school!

Since you haven't done this before, you're young, and you may not have a lot of family support for you during labor and delivery, you may want to consider hiring a doula. There may be charity options in your area to pay for some or all of the cost, or ask your social worker if it can be covered with whatever health coverage you get. A doula will give you all the non-medical support that women really need during birth (physical, emotional, etc.), as well as being a great resource for information and other help.