Unwanted 2nd pregnancy?

I had my son 14 months ago and Im pregnant again...i haven't took a test not did I go to the doctors...i have the symptoms and I can feel it moving but it depressing the heck out of me! I want to go to the doctors to relieve the pain and symptoms but I like the thought of hmmm maybe its all in my head...i just don't want another child yet...i want time with my lil guy first...i even think of suicide sometimes but seeing my lil guys face everyday stops me....i don't know what to do :( and no, I don't even want to think about abortion!