Is There A Time Limit For Collecting TIE from Office

So My Residency Card Came Out But Because Of University And Work I Cannot find a CITA for me which makes me not having to skip work which I cant do. Because of that its been over a month since my TIE has arrived but I havent collected. I think I will be able to do it in a couple of weeks but my question is that is there a limit of time that ur card stays there before U have to collect it or is it ok if you collect it a bit late?