🆘️Anxious about becoming a mom...

Up until now (35w) ive been overall mentally stable and doing normal things like preparing for babys arrival. But the past week or two im overwhelmed by this feeling of not being ready for this step in my life, almost regretful of my decision, and feeling like this is all a mistake. Like i threw my life away at only 20. I know it sounds harsh but these are the thoughts circling my mind lately and my head starts to race just thinking about my choices to have a baby. I know everyone says its more a "fear of the unknown" as i approach my due date but its like everything hit me at once...