Praise be to Allah.
If the person who is proposing marriage to you is a righteous man with a good attitude, I think that you should agree to get married. Marriage is a natural need in both men and women, and this is a good age to get married. May Allaah help you and bless you with a righteous husband, and with righteous offspring.
Shaykh Muhammad al-Duwaysh.
Girls have gotten married at a younger age than this, and their marriages have been successful. Life is experience, and as time goes by you will become more able to bear responsibilities. Protecting yourself by getting married is better than remaining exposed to the dangers of all kinds of desires and deviations, especially in misguided societies such as the society in which you live. Seek reward by forming a Muslim family and a Muslim home, and seek reward by keeping a Muslim man chaste. May Allaah help us and you to do all that is good.