I took the morning after pill. One day after taking it I had unprotected sex. Does this ruin the affect that the pill was supposed to take and should I take another one?

The morning after pill really isn't the best form of contraception for your body why on earth aren't you just on the pill??

In answer to your question as far as I know the effects of the morning after pill work for 72 hours therefore you should have been protected but I would suggest seeing your dr and making proper contraceptive precautions, having unprotected sex is a sure fire way of getting pregnant.