I'm willing to bet that you felt a tiny bit better after making that post and sharing with us how you feel...and there's a reason for that. Sometimes it's good to just talk about how you feel and share your emotions with other people who have an idea of what you're going through.
Also, when you have a cold you usually feel awful and it's very tough to deny that feeling. Unfortunately, diabetes is often an invisible disease and it can be very easy to find yourself in denial.
This is easy for me to say because I've only had type 1 for a year now, but I think what's worked so well for me is that I talk about diabetes all the time. That may sound weird because it can sometimes be a bit depressing, but I find it has the opposite effect.
To explain a few little things and the positive benefits it has had for me:
-I often wear sleeveless shirts to the gym that show my Dexcom. I've had fellow diabetics see it and approach me only to make a new friend.
-I always wear a medical alert bracelet that says I'm type 1. That's also been a wonderful source for meeting new people.
-I post on this forum (probably to a fault), other forums, and Facebook groups
I could go on and on, but those seemingly unimportant things actually have a much greater impact on my life. In a way, making others aware that I have diabetes also reminds me as well.
Try to make an effort to spend some time on this forum and at least share what's on your mind. I can't think of a single person who has done that and left thinking it was a waste of their time.