Up and down moods

I want to know if i have bi polar. I''m up and down in my moods all the time, o can be ok one minute then the next i flip out for the slightest thing. I''m very impatient and if i have to wait a long time for something i start to get moody and aggressive. If im driving and the slightest thing annoys me i start driving recklessly and i can feel my blood boil and shake and get angry. I spend money i havent got. I have totally gone off sex with my partner but put that down to losing my libido after having my daughter, but could this be because of my depression. I feel worthless, very paranoid and just generally really down in the dumps, i have never attempted suicide but have wished i was dead alot. Please help mei want to enjoy my life as i''m only 23