Bookity that's so funny! I'm the opposite, especially when it comes to kids ages. I always say I'm "almost 4 months", "4 months" or "a little more than 4 months" as an example. Just like with my DS when he was 10 weeks old he was "almost 3 months", then he was 3 months, then when he was over 3.5 months I would just start saying almost 4 months. It seriously annoys me when people give weeks or months at older ages, especially when the kid is 3 or 4 years old..."How old is your son?" reply "Oh, he will be 42 weeks (heaven help me if they say months) tomorrow." What the hell?
I slightly disagree with MrsK. I'm 16+1, if someone asked I would say "I'm approximately 4 months", but I would be reading stuff from the 17th week. I have completed my 16th week, I'm now in my 17th week.
It really does depend on the site though, you could go back to the very beginning and see when they start counting. What to Expect is written as I have said above.
The calendar I have is broken down into 4 week months, putting a pregnancy at 10 months long. But I'm pretty sure that is based on lunar months, it's obviously not actual months.
Don't worry snowbunnie, you are not the first and definitely not the last to be confused with this topic! Part of the trouble is that it is counted differently depending on what you go by, which resource you are looking at, what country you are in, your doctor's preference, etc.
Congrats on the girls!
RE: brown discharge. At your appointment please ask them to check your cervix. It is probably nothing and as your doc said if you don't have cramping that is fantastic, but just to be on the safe side get them to double check it. I had brown discharge at my appointment on Thursday (thank goodness I was at the clinic when it happened), everything is fine but they confirmed my cervix is still long and closed no signs of shortening or dilation.