I've been working at ups for almost 5 months now and when I started working I got this pain in my leg so I made a doctor's appointment and was told it was a pinched nerve the doctors gave me an anti inflammatory and it was working up until recently but for the past week I've barely been able to walk cause of my leg so I've called out for 4 days and told my supervisor that I could barley walk and he said it's not a problem just to keep him updated but today they told me that I was about to be terminated for not showing up I made a doctor's appointment for today and am going in a little but can I be terminated for it if I never called out before and haven't gotten a warning?