You are in 21st wks and suffering from loose motion
Don't worry, it isn't harmful for your baby and also for yourself.It may be an indigestion
problem and abdominal cramp
occurs for loose motion which is very common.
If loose motion continues many times in a day, then you take tab Metrogyl 400 tds, cap amoxicillin
500 tds and who ORS.
Be well in upcoming days.