That’s totally okay! I have a feeling that you may not have a high enough trust level in order to have permission to upload images.
You can find out more about that here Trust Levels.
The levels are 0-New, 1-Basic, 2-Member, 3-Regular and 4-Leader. Can I ask which of these you see on your profile?
To upload images, users must be at a trust level of 2-Member.