Am I over thinking this?

Send some positive vibes my way ladies, I'm in a tough situation.

I'm not sure if I'm pregnant or not, I took 4 tests and they said negative but I still haven't gotten my period. I plan on going to the doctor for a test if I haven't gotten my period after a week or so. I'm having PMS like symptoms but they are enhanced almost. Food aversions, nauseousness almost everyday, headaches, mildly tender breasts, very emotional (like crying over silly/small reasons you usually wouldn't), extremely fatigued but trouble sleeping. Has anyone had multiple negatives but ended up being pregnant?

Also it's been almost a year since we lost our daughter, and me and husband are scared of having another baby. But before I took a test yesterday I said to him "is it horrible that I kinda want a positive result?" and he said "me too." But we aren't in the greatest position for a child, it's manageable and completely doable but we'd rather not have one so soon. Thoughts? Advice? Am I over emotional/crazy?