Hey Fishgolf, congratulations! I studied Engineering myself, so I have a lot of respect for your achievement. I felt a bit similar when I finished my degree off - looking back I think it was partially because I achieve what I expected, partially because going to Uni for lectures/labs/workshops/racing team took so much of my time and it suddenly wasn't there anymore, and partially because I wasn't quite sure what I would be doing next. It is a big period of upheaval...
Dave (Enquiries, Wrexham Glyndwr University)