Eh I took mine around that time jugak, memang lenguh dan sakit for a few days je, that's normal, don't worry! A few of my mum friends said the same thing, some even had arm soreness until week 2 but it went away. Try paracetamol if the pain is unbearable and just keep moving your arm slowly, it helps. Kalau tak hilang dalam seminggu atau ada fever and other symptoms, check with your doctor la just to be safe