I was in the garden a week ago and felt a pinch on my pinky toe......a week later it is still swollen and has had the pins and needles feeling?

Sounds like bite?: Certainly seems possible that your toe has been bitten by some form of "critter" which has obviously not left many clues except ongoing swelling with paresthesias. Your best bet is to see a physician who can get a good look at the swelling and toe to determine whether or not this is something that is likely to respond to antibiotics or something else.