do i have PND

I AM 19 WEEKS PREGNANT
I AM NOT COPING WITH THIS PRAGNANCY
I ALWAYS FEEL LONELY
I SHOUT AT MY COLLEGUES WHEN THEY JOKE AOUND WITH ME
MY BOYFRIEND AND I ARE NOT GETTING ON VERY WELL AS WE USED TO
I FEEL AS IF I HAVE DESTROYED MY FUTURE BY HAVING THIS BABY AS IT WAS AN UNPLANNED PREGNANCY EVEN THOUGH I WANT THE BEST FOR MY BABY
MY BOYFRIEND AND I HAVENT DISCUSSED THE BABIES' FUTURE
I FEEL HE IS CHEATING ON ME AND THIS IS EATING ME UP INSIDE I WANT ALL THE BEST FOR MY BABY BUT SOMETIMES IT ALL GETS TO ME
BECAUSE NOW I HAVE TO TAKE CARE OF ANOTHER SOUL
I FEEL I'M A BAD MOTHER I WOULD REALLY LIKE THAT ME AND PARTNER WORK THINGS OUT
I CRY FOR NO REASON...... I FEEL THIS MAY AFFECT MY BABY
I LIKE ISOLATING MYSELF FROM OTHER PEOPLE
I FEEL BETTTER WHEN I'M ALONE
AND I OFTEN THINK OF HURTING MYSELF
I DONT KNOW WHAT TO DO PLEASE HELP

Hi Cyie, I personaly havn't had the onset of depression during pregnancy so i can't relate exactly to what you are going through but i have had PND with my second and i had depression from about 6 months before my first was born till he was about one.I feel some of your issues may be normal especially being so young,but the last few things you listed are definitely not normal.I think you should at least talk to a doctor about it you might just need someone to talk things through with or you may need medication, please don't put it off i lived through two years of hell because i was to proud to get help and i regret it alot i missed some of the best times in my sons life.Although it doesn't feel like it now having a child (although very challenging) is the most rewarding thing you will do.
Also different subject you should find some way to communicate with your boyfriend about how your feeling.i know it sounds corny but communication is the most important thing in a relationship , I am finally learning myself to talk to my husband about things and it helps, guys don't seem to sense that your upset you need to tell them and explain it.
I hope i have helped , and please go get help so you can enjoy what should be the best time in your young life.