Aiyoh, don't worry lah, white coat syndrome tu common, terutama first time checkup! A few of my mum friends pun kena gak, especially with twins kasi extra stress. Try to rest more, reduce salt intake, drink plenty of water, and do some light walking or gentle stretching, memang membantu calm the nerves. Tapi since BP spike is repeating, best you discuss with your doctor about what's normal for your pregnancy and whether any monitoring needed, sebab setiap mama different especially with twins. Congratulations on your pregnancy!