discharge! tmi.

I'm four weeks pregnant, and for the past two days I've been experiencing a ton of clear slippery discharge - enough so I have to change half way through the day!
Is this normal and a sign of a healthy pregnancy. Where I'm from, they don't schedule you for an appointment until you are 8wks, and no ultrasound until 10-12wks.
I'm a FTM, so of course I'm paranoid about every possible thing!