Hello aspirant,
Unfortunately, you cannot become Doctor after completion of B. Pharmcy. Because Pharmacy is another profession and Doctor is another.
To become Doctor you need to study MBBS, BDS or for Ayush Doctor BAMS, BHMS, B.U.M.S, etc are required on Minimum education qualification basis.
You can become Pharmacist or can get job in Pharmacies, etc. You can study M.Pharmacy as well after completion of B. Pharmacy.
For more information about how to become Doctor, go through below mentioned link.
https://www.careers360.com/careers/doctor#:~:text=In%20order%20to%20develop%20a,and%20AIIMS%20UG%20entrance%20examination.
I hope this information was useful to you.
Good Luck!!
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