I am between 7 and 8 weeks and have virtually no pregnancy symptoms. I've no morning sickness, sore boobs, back, tummy aches or anything. I have felt a little tired mid afternoon this last week but feel a picture of health otherwise. I suppose you or I shouldn't complain!

i'm not complaining just scared this is what happen last time and then I miscarried

So sorry to hear that. I'm sure everything will go fine this time. Try not to stress, hopefully you are just one of the lucky few who have an easy time of it. :d

Absolutely totally normal.
In fact, sometimes it's the first thing you notice-even before you miss a period sometimes.
In my first pregnancy, it was my only symptom(at about 7-8 weeks), until I started feeling tired later on- I was never sick during that pregnancy- this time around, I was sick and tired first, before I even missed a period, my boobs got really sore-so sore that even to expose them to air hurt!!!!, around about 7-8 weeks again, and i'm now almost 22 weeks, and my nipples are still sensitive. The real sorenesss is gone though, and they are huge, which is nice for a change!!

Don't worry about it- do go and get fitted for a good bra, or a sports bra with good support when you can. You probably won't able able to use it for a while after you give birth, because you boobs just blow up then, but for most of the pregnancy they should stay pretty much around the same- just a little bigger than normal.