Salam! Honestly, a few of my mum friends who were pregnant dah ambil booster, and they're doing fine, mostly just arm soreness and a bit of fatigue, which is normal la. Tapi yang penting, kena discuss dulu dengan doctor atau nurse at your clinic, sebab they know your pregnancy history best and boleh advise based on your specific situation. Jangan risau sangat, just go prepared with lots of water and rest that day okay?