Sweet little sister, I've have no doubt God can use your mistake for good. I also have no doubt if you learn from your mistake & stay away from those sweet talking Romeos, & patiently wait on God, He will send you the man who is to be your husband. And... God will give him & you all the Grace necessary.
edit: To those who read the above. In no way I am excusing or condoning sex outside God's martial prescription. When I say " learn from your mistake" I am talking about repentance. As it is written; "godly sorrow worketh repentance to salvation not to be repented of"