Hi,
I had a thorough gynecological check up just before we started trying to concieve, which included a pap smear.
At 8 weeks pregnant I had a scan to ensure pregnancy wasn't etopic. (As well as urine test to confirm the pregnancy)
Another scan at 10 weeks.
Then at 12 weeks I had a blood test ( tests for hepatitus, syphillius, your blood type, RHD factor and now in HK all pregnant women and those using a hospital need to have an HIV test); as well as a urine test to check for diabetes.
At 13 weeks I had a specialist scan and blood test to check for down's syndrome. This is called Nuchal transluency test.
Hope that helps! I think that when exactly you have each test will depend on your Doctor- I have a private Doctor, but I think it might be a little different if you attend a government clinic (i.e. they will only do nuchal transluency test if you are over 35).