Misseskimo I really think you should make a face to face appointment with your GP and explain exactly how you feel.
It may just be the early days hormonal imbalance or it may last throughout your pregnancy, either way, it is best to get the advice and talk it through.
I have days where my OCD tries to kick off, but thankfully I am able to manage it at the moment. Mine is very much anxiety related, and I think that because I have had a scan I am slightly better this week (although it won't last)
Our GP's and midwives should know how to deal with us. I have a massive fear that I will have a panic attack which I will not be able to calm down from and they will have to sedate me which may harm my baby, or I may go crazy with thoughts.
One thing I get at the moment is ringing in my ears - I am 99.9% sure it is from my blood pressure tablets (can feel my heart in my ears too) and it makes me worry I will never sleep (this in turn sets off a panic).
It's all ridiculous I know, but try telling my brain that when it's in mid panic!
Speak to someone, speak to us, and get some proper advice.
Don't let it eat you up x