I have been with my boyfriend a few months. I adore him, he's like no one I've ever been with before. We are extremely similar in terms of what we like, our childhoods etc., we are just different cultures.
Anyway, things sort of played out like a "perfect" relationship when we were dating. We took it very slowly in terms of having sex (didn't have sex until 3 months into dating), but we would spend vast amounts of time together (our first date for example was 12 hours long!). We have connected on a very deep level - he has cried in front of me numerous times in relation to, for example, his PTSD. We've been on holiday together for a week abroad, and he has said things to me such as "I would marry you" or "this is my last relationship" and would say stuff like "I can't believe someone like you actually exists" or "you're so out of my league". I just love him (although, I wouldn't say it so early on...).
Anyway, last week we were both under a lot of stress. I have just been made had extra responsibility given to me at work which has made me very overemotional and sensitive. I have been crying a lot and just generally being down. On the other hand, he is moving to his new house and is manning a big project in work which has caused him stress.
On Thursday I felt sick with stress and spoke about it briefly to him about it in passing during a conversation. On Friday he messaged me in between other replies saying "is there a possibility you could be pregnant? don't want to worry you, but you have said you feel sick a few times now xxx"
I rang him back in panic, my previous relationships have been abusive and my ex emotionally abused me, made me get an abortion etc. I overreacted on the phone started crying and had to hang up. I text him saying that I felt bad this was all happening, I really didn't think I was etc., and that I would take a test. I kept saying I was sorry to stress him. Took a test, negative.
Anyway since then I really don't think he understands my reactions at all. Which is understandable. My issues from my past should be under my control.
Since this has happened I can't seem to shake the feeling of being abandoned, like he is about to leave me. Every time I communicate with him I have this feeling of shame that I allowed my past to affect how I react to the situation 
Obviously he is stressed and busy, and he has always informed me of when he won't be able to reply - for example, he will say "hey sittingunderthetree, big meeting at work this afternoon, will call you when I get home!" and he does. But, suddenly, in my stupid head, this has become negative
Please can someone tell me I'm being ridiculous and how to stop it or do you actually think I have pushed him away?