Hi I have had what seems to be jock itch for a couple of weeks, I started using an anti fungal cream 5 days ago. How long untill it gets better :-)?

Depends ON How Bad. Typically, jock itch (tinea cruris) will be cleared within in 7-10 days of daily treatment. More involved cases may take longer. Cases that are resistant to specific creams, won't clear until you get the correct treatment. Sometimes the discoloration associated with the infection can take longer to clear, waiting for the skin cells to be replaced.
See below. If it does not get better in a week, see a doctor as may be something else.