Hi. First of all, this has got to be very tough on you, and it's good that you're handling this maturely by considering the pros and cons and potential ramifications down the road.
I would say that there's a few pros and a few cons, and a few aspects that can be both or neither.
Pros:
- a baby, no matter how unexpected or inconvenient, brings immeasurable joy to a mother who genuinely loves and wants them.
- the chance to see and help you child grow up and become what they will
- if you love children and you love your child, parenthood is the most rewarding (and demanding) job you'll ever have
Neutral / Both / Neither:
- it will force you to grow up much quicker than your peers
- a tonne of responsibility
- there's no going back if you decide to keep the baby... I mean, there technically is the option of terminating rights later on, but it really should be either adoption or keeping from the start.
Cons:
- social alienation: I really wish this didn't happen for young mothers. If anyone needs a supportive social structure, it's young parents, but unfortunately society tends to isolate and degrade them instead of help.
- school will be tougher, but there ARE programmes that are available if you know where to look. There are alternative schools, home hospital (in some states/countries, I don't know what it's called where you live or what the policies are), GED programmes, community college after that. Education does not have to end, it'll just be a bit more difficult and different.
- financial responsibility, either with help or especially without it, will be enormous and will be a struggle. Again, there are programmes that can help with this, and someone at planned parenthood, a guidance counsellor or a physician might be a good place to start to look at these programmes. It's no good to be living off government assistance forever, but when you need it, you need it.
- many teenagers are just not emotionally ready to be parents without help. Some are, some aren't.
In any case, I would like to encourage you to go to the nearest community run parenting class or teen parenting support group a few times before you make any decisions. Talk to other teen/former teen parents, be honest with yourself about what you want and what you feel you can handle. Ask a guidance counsellor, doctor, teacher or other adult you trust if they could help you find information and resources to help you cope with the pregnancy and the baby (if you choose to keep him/her) or adoption (if that's your choice.)
Many teenagers feel most comfortable going to an adult that they know and trust that no longer has direct involvement in their lives or direct influence on their futures - a former sports coach, teacher, or mentor might be a good place to start. They're a third party outside of the family that will likely advocate for you and guide you, but at the same time they do not hold the gradebook or anything like that, so they are unbiased in that respect.
Think it through thoroughly and talk it over with an adult you trust, or several, then think it through again and again. Either way will not be an easy decision, but the more you think about it and the more informed you are, the more confident you'll be in whatever decision you'll make.
Good luck, sweetie. I know it's a tough situation and that it's definitely not ideal, but you're not the first one to go through this, and you won't be the last.