Consult your gynae for suggestions, my gynae asked me to stop when I told her my nausea is getting very bad but at that time I already hit second trim though.
You should inform your gynae and seek his professional advice instead of asking us who are not professionals.
Check with ur gynae. I will rather have morning sickness than have problem with my bb .
Best to consult ur gynae as Duphaston is supposed to stabilize your pregnancy.
Better to consult ur gynae before stopping duphaston.
Should be fine but best to confirm with your gynae