Please Help me I am so lost/in an unreal situation!?

The other day I was having dinner by myself and had a little wine with it(2 glasses at very most). Three hours later, I swear it was this long, I had just received VERY upsetting news and decided on a whim to take a trip from LA to Santa Barbara. I did not feel any intoxication whatsoever at this point. I was devastated by the news I received which caused me to bawl my eyes out the entire way to SB. So I made it all the way to Santa Barbara and was pulled over for putting my blinker on too late before turning. The cop has me follow her finger, which I do fine. She has me get out of my vehicle and do all the sobriety tests. I walk the line and raise my foot and am completely competent throughout all of this. The male cop that is also there looks at her and says... she seems fine? And she kept looking at him to be the judge and he was like you're the one doing it? Anyway so then she asks if I will do the breathalyzer, which of course, I know that I am not drunk by any means, so I agree to. I end up blowing a .081. I am completely baffled and so is the male cop. The lady says I'm under arrest and puts me in her car. She then tells me I am allowed to do a blood test which I say I definitely want to do. I keep reading conflicting information about whether blood test will register lower BAC or not but my god I wasn't drunk it had been close to five hours since my wine at this point. So currently I am awaiting the results of the blood test and praying to jesus, buddah, just everybody that it comes back under .08. I am a full time college student that also works full time and I can't afford any of this or to tell my parents. The thought of them finding out causes me to want to immediately commit suicide. I would never be able to tell anyone this in real life. All I have been doing is researching everything there is to know about DUI cases/methods of suicide. If you had my parents you'd be in the same boat. I need help you guys please help me this is the worst thing that could've ever happened. I would never get in a car after being intoxicated.. So if my blood test comes back over .08, I'm opting for the Public Defender because like I said I work my constantly and all of my money goes to rent, food, gas and school. This wasn't a case of getting trashed at a club then jumping in my car without a second thought. I don't even party let alone hardly ever drink and I've never driven in the car with a drunk driver or been the driver. This was a situation where I rationally didn't at all suspect I was impaired by any means. I just turned 21 three months ago. I used to suffer from severe depression and it still creeps up on me once in a while and right now it's brought back all my suicidal thoughts. Please if you can help me or give me advice it could save my sanity and life.