Good chance something mechanical has broken in the trans. You can start by checking the fluid level and condition but I suspect you will need to call a tow truck soon. Here is a link to find a shop near you.
https://repairpal.com/repair-shops
Alex
RepairPal Certified shops can diagnose and repair your 2003 Dodge Stratus. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.