Depends on where you live. The first trimester shouldn't be a problem. See related links below to search your state or just call Planned Parenthood in your area or go to prochoice.org. Their link is in there too.
Depends on where you live but usually the latest limit on demand is before 24 weeks since then the fetus becomes viable. It can be earlier then that though. The states in the US have a limit of week...
No it's not but some states have a limit on 3 months so you might have to travel to another state. In the USA you can have a abortion up to the 20th week in some states.