Alhamdulillah, lega dengar baby still okay and heartbeat ada, that is the most important thing. Spotting masa pregnant memang boleh berlaku untuk pelbagai sebab, especially kalau banyak aktiviti berdiri dan berjalan seperti yang you cerita, and the fact that it stopped after medication is a reassuring sign. My friend had something similar around her second trimester, bright red spotting that lasted only a short while, and her doctor explained that sometimes the womb just needs extra support, especially when we are on our feet a lot. Do continue the medication as prescribed, rest as much as you can, and please do not hesitate to go straight to PAC if the bleeding comes back or if you feel any cramping, just to be safe. Always best to follow up closely with your own doctor or specialist, as every pregnancy is different and they know your case best, take care of yourself, dear.