Alhamdulillah, ramai yang ambil booster masa pregnant dan okay je, since doktor dah okayed it for you and your first two doses went smooth, I think you'll be fine lah! Side effects yang lenguh tangan tu normal je, mungkin kali ni similar or bahkan lighter sebab body dah familiar dengan vaccine. Just make sure you stay hydrated and maybe rest sikit after, paracetamol boleh makan if needed. All the best dengan appointment harini!