EPs

So I downloaded the Sims 3 and my expansion packs onto my laptop. All is good with that. I recently downloaded the Sims 3 onto my iMac which I used the same origin as my laptop. The problem is, I didn't give me the option to download the EPs. I can't put in the discs to download them because iMacs don't take DVDs or discs
I don't think :( Help!!!