As our learned colleague above has stated, we are not in a position to help you.
If I understand your post correctly, you absconded. There may be very good reasons as to why you took that course of action. But, and there is always a but - you took that decision without recourse to the consequences. You needed to find another way out of your predicament at that time.
Now you are faced with a difficult situation. You either tell the truth, or you tell a lie. Only you can make that decision, we cannot do it for you. From where I sit, you do not have any other choices. The obvious answer is tell the truth, and plead mitigation. Do a good job of pleading your case and you might be successful, but you must also be prepared for a negative outcome. That means chalking it up to experience and moving on with rebuilding your life. Will it ruin your life? No. It will not be easy for quite some time, but you can rise above this if you really want to.
Actions have consequences. Write that on your bathroom mirror so you see it every day and you will work it out.