Is an internal check-up necessary in the ninth month of pregnancy?

Is it necessary to have an internal check-up in the ninth month of pregnancy? My ninth month would be completed on 31/1/03. Though everything was normal during sonography and external check up done today, the doctor told me internal check is required to know the delivery statuse and is compulsory. Please advise. Doctor told me thje date delivery is around 5-6th Feb/03