So your account needs to be at least three 14-day periods old to be able to embed images, is that right?
Yes, this is one of the options to simply wait.
The other option was posted by jhenfelipe few posts above :
This meta thread is mind blowing

so what rank do you need to be to post images ?
Thanks in advance for any answers

Atleast jr. member to show the images when you post. Your account is 1 activity away to rank up.
On the other hand, if you want or need it suddenly, there's an option to upgrade your account into a copper member by paying a small fee. See full details >
Newbies can now pay a small fee to enable images