Sound serious enough to get a test?

I have a anxiety disorder and over think things often... so I'm wondering if I may have just thrown myself into an hysterical pregnancy (For those who don't know what that is. It's where someone worries so much the body makes itself 'pregnant' although it's not.)

We didn't use protection(two days before period and three days after finished. this was almost month ago) and so far I have mood swings, stomach cramps, tiredness, frequent urination, nausea, increased hunger, feeling faint, headaches, thrush, and tender breasts. I get so hungry but I can't even eat much because I start feeling sick.

My nausea is so bad I had to stop watching spongbob because something on there looked disgusting. haha. Lame...

Is there anything else I should be looking for as well?

I'm not buying a test unless it seems serious enough. I would have already if it wasn't for my disorder.

Oh and just in case I should add that my menstruals are too irregular to keep up with so I can give you and honest answer on if I've missed or not...