17 and pregnant - "get an abortion!"

So I'm 17 and just found out I'm pregnant. Today I went to the doctor (an elder lady) I took a pregnancy test there, and after she checked me down there... also I got my blood drawn. The test was positive and she kept talking about abortion or an abortion pill. Unfortunately my mom had that reaction too, that apparently I have no other choice than abortion. I feel so alone cause I feel forced to get an abortion, and to be honest ? I don't want one... I want to keep this baby, not kill the only chance of life this baby will have ... anyone who went through the same ??? could really use some advise... my boyfriend is with me btw he doesn't want abortion either and his mom was kinda excited for us which really made my day...