I finally plucked up the courage to tell my new boss about my pregnancy thanks to a quick rush of adrenalin and he took it surprisingly well! He was clearly taken aback but said congratulations and didn't make me feel even more guilty than I already do (only signed my contract last week)!
However, my relief was short-lived when he said not to mention it to my colleagues yet (which I wasn't going to anyway), particularly one lady - who I work quite closely with! Apparently she is 'sensitive' to pregnancy both professionally and personally but obviously my boss didn't delve into details. I don't know what this means but have a horrible feeling that maybe she can't have children and this will be a kick in the face for her. She's been really supportive since I've started and I don't want things to be awkward or weird between us but I guess I'll wait for my boss to discuss it with her and see how we go.
I hope I can make enough of an impression for her to be happy for me rather than awkward, else it'll become a difficult working environment. I dunno. Any advice from anyone who's been in a similar situation? Although I guess I'm not even certain that this is the situation, her "sensitivity" could be any number of things!