I don't like the word preggo either!
I didn't know i was pregnant with dd either so had been drinking and smoking, gave up both soon as I found out and never smoked again since, can't help it if you didn't know and wasn't planning it.
Im not planning to find out the babys sex again, husband is desperate to know but tough! Its like opening a Christmas present early to me and I love surprises! Some areas won't tell you at 20 week scan so worth finding out what the policy is where you live, my sister can't find out where she lives.