Hey Andrea,
I know EXACTLY how you feel because i am 16 & have a 3 month old. Since you said your ex would still help...ask him if he'll go with you to get a test. Or even get one & bring it to you (that's what mine did)
If you are pregnant....give yourself time to take it all in before you tell anyone. And even though its a hard job & u are very young, getting an abortion is the least of greater options. But as mentioned above, it is YOUR decision & don't let anyone tell you what to do. But personally, I am glad I didn't go that route.
If you need ANYTHING...message me. I'm here to help & offer support. Keep us posted.