I think all the advice, use condoms, don't have sex etc. is fine but i just wanna say.. Use it as you can, just be careful.
All I wanna say is don't be tempted by the cheap contraception medications you'll find.
I found the brand I usually use at home in a respecatable looking pharmacy, bought it and ended up being sick and having my period for almost a month.
As Char pointed out, it's not just related to sex. Not every girl who takes the pill is doing it just for that reason.
I had never been on the pill before going travelling really, and I took it for two reasons mainly:
1. Convenience. I tricycled it which meant that I only got a period four times a year. I had a lot of reservations about doing that, you know is doesn't seem very natural or whatever, but boy was I thankful for it when I was trekking in Bolivia and such places! It was great.
2. Safety. You dont want to think about things like rape when you are heading off on the adventure of a lifetime, but I'd rather be protected in the VERY UNLIKELY event of something awful like that happening.
I could only get a script for 6 months from my doctor in Ireland. But in South America, you can just walk into any pharmacy and buy them over the counter. And they had the brand I used- YASMIN. I expect it's a similar story in Asia? I suffered NO side effects from taking this - no weight gain, no mood alterations. And it wasn't that hard to remember to take it every day. I just took it with dinner, more or less around the same time each evening. The packet of pills was in my washbag, which I'd go to a few times a day anyway, so I'd see them all the time and be reminded to take it.
When I stopped backpacking I came off of it again and felt fine then too. Next time I go travelling, I intend taking it the same way.
If you do end up having a torrid fling with some Latin lover or whatever , I would still advise using condoms with your OCP. Aids and STDs are a huge problem in many parts of the world, and you just dont know who has slept with who. But you know that anyway.
I would say talk to your GP about maybe trialing the OCP at home for a couple of months now and see how you react to it. If it doesn't suit you, then talk about other options.
Hope that helps.