Hi there,
i hope you are doing ok, even considering that you must be pretty stressed out. I don't know if you need advice, but just in case here it goes, and see if you can use any of what I say...
Do you have an adult you trust that you can talk to about this? Someone who is not going to panic or make you feel bad about yourself? If you feel like there is someone older you can trust, you might want to tell this person, and maybe they can help you out, because it doesn't sound like your x is going to be a source of much support. If you do tell someone, please remember that none has the right to make you feel bad about this, ok? It doesn't change who you are, or how good you are, or anything like that.
I don't know in what area of the country you are, but you might want to check out if there is a planned parenthood their website is
www.Plannedparenthood.Org center near where you live. They can give you a pregnancy test, provide you with information on what to do if you are pregnant, and give you information on contraception (if you are not for the future!).
You can also check out some of these to see if they can direct you to more specific places in your area that might be able to help you out:
www.Advocatesforyouth.Org (website with information for young people about sexuality&pregnancy)
teen education and crisis hotline 1-800-367-7287
www.Thehelpline.Org (for advice on what to do if you are pregnant)
these are just some, but remember you are not alone, and there are a lot of resources out there, and people that can help you out...You just have to find them.
Best of luck! And let us know what happens