yep it can be entirely normal :) that was one of my early symptoms with both of my pregnancies...but if it's yellowish it may be a yeast infection, even if you have no itching or burning. As long as it's clear and thick like EWCM it's pretty normal.
I had this up until about 12 weeks with this pregnancy so much so I had to wear a liner. Every pregnancy is different, with my other 2, the first one a lot of cm, the second very little. If you are concerned talk with your doctor but according to my experience and what my dr has told me, all perfectly normal. Congrats. and good luck.
With my son I had an increase of cm but it was more whitish mixed with the ewcm. Not sure why but I am sure it is normal. Congrats on the pregnancy!!!