Try not to worry hun! My symptoms have come and gone the whole time and every time iv panicked, iv hardly been sick at all and its really scared me, iv had days where my boobs were not sore any more and is squeeze em to try see if they were sore at all lol! I was petrified leading up to my scan because all my symptoms and gone But i had my 12 week scan and baby is perfect! Each pregnancy is very different to one another so dont think just because you are lacking symptoms that anything is wrong because that is not a sign