Is there someone out there who can answer me on these questions?

Age questions
1. How long is the lifespan of a troll.
2. When do they become teenagers.
3. When do they become young adults.
4. When do they become adults.
5. When do they become old.

Pregnancy
1. How fertile are trolls. (80 times a night? xD)
2. How long is the pregnancy for a female troll?
3. How long do the mother care for the child.
4. Is the father responsible for the child too?
5. Who get's to name the child?

Age-wise:

Adulthood: 17 years.
Middle Age: 30 years.
Old: 47 years.
Venerable: 69 years.
Life Expectancy: 70-89 years.

The other questions are harder to answer, since there really is no official stance on those things. Troll society is said to be sexist and males to be dominant, so logically I suppose it would be up for the males interests whether he would partake in the childs upbringing. One RPG book says that "Males control everything; females exist only to make more trolls" - which would probably mean that the males generally do not care for the children, nor that things such as families exist. Its just the tribe.

Though if you are planning to RP a pregnancy and so forth, its probably a different thing because essentially you as a female troll have already broken free from your place in the tribe. Might sound farfetched to think that all female trolls are "exceptions" like that, but lorewise a large part of the darkspear tribe is leaving their traditions behind and learning their way of life from the orcs and tauren. So basically you can also choose to be a troll couple that has moved to the "modern days" of orcish ways where both sexes are equal and the families are more human-like, with both the mother and the father involved.

Largely it depends on the type of troll society.

Jungle Trolls are extremely sexist. Females exist solely to increase the tribe's size and are seen as property of the male trolls. They are a symbol of status: the more wives a warrior has, the larger his prestige within the tribe. The Darkspear tribe (player trolls usually hail from this one) however is bound by Thrall's edict of equality within the Horde, so they do have to allow females who wish to join the Horde directly to leave the tribe.

Forest Trolls and Atal'ai/Hakkari seem more equalized when it comes to genders. The sourcebooks do not mention any distinguishment between sexes here like in Jungle Troll society, and the number of priestesses and female warrior NPCs in the game within these cultures also seem to suggest equality. Or at the very least the possibility for a female to gain respect by distinguishing herself in combat.

If you're considering RPing a pregnant character, bear in mind that it's possibly one of the hardest things to get right. Many try, but most end up coming across as embarrassing attention seekers, or they are lumped in with all the demons and vampires that dance on the mailbox of Goldshire.

I've been unlucky enough to see two births in Azeroth, both in curiously public places and both delivered in vivid yet comical detail. Yep, in one of them the baby was played by a gnome.

I just wanted to know, for my and my partners sake.
I'm not going to force my troll-pregnancy on you lot! xD

But it would be nice to know for how long my char. would be pregnant..
The age seem to be as that of humans, so i guesse i just let her go 9 months. = )

Thanks, you who answered my tricky questions.

*flowers to all*