Attention seeking can still be a symptom of a mental illnessn and just because you seem attention at certain times does not rule out other symptoms you may be expereicing, you just might be playing them up a little in order to receive acceptance.

For example, I once exaggerated a diagnosis to an extreme because I felt that what I was going through (which for me, was also caused by PTSD) wasn't understood by others and I wouldn't get the support I needed. This doesn't mean I don't have a mental illness. In fact I see my constant desire for acceptance and love as PART of my illness.