Once you had your BFP did you keep testing? Or just accept that you are pregnant (I'm worried about Chemical Pregnancy - how common is it?)
I tested once more then next day. No idea how common CPs are though.
Once you had your BFP how soon did you call and go and see your GP?
I had an early scan (5+4) as a) I could and b) I needed a professional to tell me I was really pregnant. You can tell you doctor now. Nothing more will happen though until you're due your booking in appt with a midwife
I'm due to travel for work the first week of October, to the US, the would make me 8 weeks - is it safe to travel at that time?
Totally safe!
How common is morning sickness and when to people typically get it - I'm worried I'm going to be sick when I'm away with work and not able to hide it!
Quite common although the severity can differ. I had all day nausea (but no vomiting) from 7 til approx 13 weeks.
How early did people tell their employer?
I didn't - I knew I was leaving before I got preggo so didn't need to. Unless you have issues that may need time off work before 12 weeks, I wouldn't worry about informing them before then.
Has anyone done a private early scan (at around 6 weeks)? As you can probably tell....Im a worrier and thought it might put my mind at rest!
As above, I did at 5+4. It didn't alleviate any fears (I was terrified of something going wrong up til the moment ds was born
) but it was amazing to see the little heartbeat flicker on the screen 
Im not getting as many pregnancy symptoms at the moment, I did have sore boobs, cramps, really sore lower back (no bleeding or spotting of any kind), weird crazy dreams, heightened sense of smell and tiredness but in the last day or two my cramps and back ache have now gone...is this usual?
Sounds about right although all pregnancies are different.
Congrats! 