It sounds loike you should get a second opinion. If it were just your belly button causing the problems that would be different. I had the same thing and my Dr said it was eczema and gave me some ointment. It's all healed. You're still not feeling good though and that's why I recommend a second opinion. The two could be related, or, they could be a separate problem.
Thanks for your reply, thus all started the same week as me and my wife lost a baby at 25 weeks (during pregency) aswell the week after i found out that my work were making redunacy. Not sure if stress is related.
Not a great 2013
Sorry to hear of your sad loss and that you may become redundant.
The symptoms that you describe are not stress related. Stress can make you feel ill with worry and also your bereavement, but stress would not give you physical symptoms of pus coming out of your belly button or a swollen gland.
I agree with remar that you should make another appointment with the doctor, perhaps have a different doctor at the surgery. You may require a blood test to find out the reason of the swollen gland. Your body is clearly fighting some sort of infection.
As you are 27 and your underarm gland is swollen with your other symptoms, ask your doctor if you could get checked out for Hodgkin's Lymphoma.
I'm so sorry for you loss. Yes, that can cause so much stress. I do agree with Jemma though. It would not make puss come out of your belly button or make you have swollen glands. Let's hope you have a better 2014.