Erectile Dysfunciton

For about a week (6 days to be precise) I had an issue with erections, or rather lack of erections. I feel like a delicate sort of pain down my penis, it's barely there but it is discomforting. I am still experiencing morning wood normally. Now, I've read that diabetes may make ability to have erections hard. I do not have diagnosed diabetes although I am planning on checking my blood sugar levels sometime soon. Anyway, from what I know (let's assume I have diabetes) your muscles or vessels may be 'broken' and you may get erectile dysfunction but then morning wood wouldn't happen either which I guess (needs clarification, pls) means it's possibly not diabetes. Have any of you, males out there, ever experienced it and what was the reason in your case