I would be less concerned about the waiting time and more concerned about your current status. Even if your father filed an immigrant visa petition for you if you have been unlawfully present in the U.S. for 18 years the 10 year bar will apply to you. If the visa petition is approved you will have to go to your home country to apply for the visa and will be barred from returning for 10 years. In cases like these you will need to apply for a waiver of the bar. In any event, this is a complicated case and you should seek legal counsel. Best of luck.