Ngala, I am a massage therapist and massage should be avoided in the first trimester.
The main reason for that is that massaging the lower back creates pressure on the abdomen. There hasn't been any 'proof' that this can cause a miscarriage, but generally the massage therapist doesn't want to be put in a position where they can be 'blamed' if anything goes wrong. We were always taught that 1st trimester if definatley a condraindication (not okay) for massage.

Having said that, there are people that will do it, and I used to massage my sister before she knew she was pregnant and she was in the high risk catagorie for miscarriage. Everything was fine for her too.

Also, if you are going to get one, ring around and find someone that specialises in pregnancy massage, not just someone that agree's to do it. A massage certainly is fantastic when your pregnant! Make sure they use a water based or natural oil too.

Let me know if you have any other questions