I've been trading on tennis the last couple of days and it's been going pretty good. First day I made £80, yesterday I made £90. Today it's gone wrong

I placed a bet at 1.1 for £100 and then things took an unexpected turn and the match became competitive all of a sudden. Don't know what I did but I tried to cover it and ended up betting £500 on the other person and I've just ended up losing £425

Not happy, feeling ill. Can't tell the missus, need to get it back
