Advice needed about my Samsung Galaxy Ace mobile

Hope I'm posting this on the correct section. I mistakenly put the sdmicro card into the SIM card slot in my new Galaxy Ace S5830 mobile today. I just signed up a 2 year contract for a Three mobile for my partner and it was delivered today. There was no User Manual in the box and the quick start guide was not very good. I'm really worried and annoyed at myself for being so daft as to put the wrong card in the wrong place.

Any suggestions and advice urgently needed. What could the implications of me doing this be on my new contract - will they replace the phone if the card cannot be removed at the three shop ?