Prenatal massage is allowed from second trimester onwards, unless you are advised by your gynae not to. Make sure u go to an someone specialised in prenatal and not just a regular massage place. I went for prenatal Physio from my second trimester instead, as I needed deeper tissue work. Try Dr Jerome at Orchard Health Clinic
Yes, I just started at 20 weeks. I do my pre-natal massage with Madam Partum and they only allow 20 weeks onwards for pre-natal massage. Their therapists are experienced and they have TCM doctors at the outlet if you need additional advice as well.
If you want, can do it once when you’re 6 months, 7 months and 8 months. Then rest.