I had a hammertoe surgery last month.

I had my hammertoe surgery on the second last toe of my left foot on 21st July 2009 and have had several follow up check with my doctor who said I was progressing normally. On the 14th day my stitches was removed and I was told to wear my 'post-op shoes' for another week after which I can go back to normal shoes. As of yesterday 19 days after my surgery, 09th August I tried walking in my hush puppies 'flip flops' to work (I have a desk job, so not much walking is needed) As the day went by the pain just kept creeping in. By the end of night my toe was swollen and I was in a lot of pain. I was compelled to pop a pain killer to subside my pain a little and to put me to sleep. This morning I was still in a little pain but I can’t walk in anything except my post op shoes. :'(

Just wanted to know is this normal , as I had not used my foot for a long time. Oh and the doctor never gave me a course of an antibiotics? I am really scared and not sure what to expect. ?