I took the morning after pill 24hrs ago. just wondering how long it will mess with my cycles for and how soon after taking it will i resume ovulation ?

Difficult to say: It won't necessarily do anything to your cycle, but many women do find their next period to be a bit off after using Plan B. That can mean unusually light, perhaps a little early, perhaps a little late, maybe spotting for a day then it stops then comes back after a day. Everyone is different, but you should assume yourself to be as fertile as always going forward. Usually the 2nd period is normal