Should I propose her?

There is girl in my college 19F. I have been friends with her since my first semester. And from the past 4 weeks I dont know how but I have developed some feelings for her. I have not approached her regarding this and I'm not sure that if she's interested in me or not or she is in general into relationship as she's single till now. We have been very good friends now. I am afraid that if I confess her after the end semester exams of 2nd sem, our friendship maybe ruined but I dont want to miss even that 1% chance. What should I do? I'm very confused regarding this.