I only found out im pregnant 2 days ago and yesterday at work (where im on my feet all day) i had a sore back and the feeling like my chest was being crushed. Feeling kinda out of breath and having to take deep breaths all the time. DH thinks im sighing with anger/frustration lol. is this normal? im only 5 weeks and didnt think any symptoms would kick in for a few weeks or am i being totally naive?