Hi Helsi,
It's probably true that babies do pick up on negative emotions and prolonged, intense stress (expressed or supressed) while they are floating about in their little bubble - they get a mini dose of all the chemicals that go through our bodies, after all. But it's not the end of the world, Helsi, and certainly won't actually lead to suffering, and you don't need anything else to worry about right now.
You might feel less anxious about this if you put a few minutes aside every day to send/speak happy thoughts and reassurance and loving things to your baby, perhaps last thing at night. Might help calm you as well as helping you feel you are doing something to offset this unavoidable stress with your dad.
And if you are still concerned after nipper comes along, and you're into this stuff, chiropractors and kinesiologists and various other slightly less mainstream complementary practitioners might help to resolve emotional stuff that happened in utero. I saw a kinesiologist a couple of years ago about something completely unrelated, and she announced that one of the intense emotional things she was picking up from me stemmed back to when my mum was 4 months pg - I spoke to my mum and it turns out she was extremely anxious and feeling guilty because she was pg before her older sister who had been trying for years, and the reaction from my aunt was not good at all. Whether you believe that stuff or not, and I admit it can get a bit weird at times, you might find it reassuring that there is something to try later on.
Take care of yourself and grab every chance to get a few minutes of sunshine on your face - it does wonders for releasing happy chemicals in your bod!
Good luck with everything
Pinchy xxx