Hello anaskan,
I think you can give this exam if your marks is good.
There only eligibility criteria is
1.   he/she is a citizen of India and possesses any primary medical qualification, either whose name and the institution awarding it are included in the World Directory of Medical Schools, published by the World Health Organisation; or which is confirmed by the Indian Embassy concerned to be a recognised qualification for enrolment as medical practitioner in the country in which the institution awarding the said qualification is situated;
2.  he/she had obtained Eligibility Certificate from the Medical Council of India as per the Eligibility Requirement for taking admission in an undergraduate medical course in a Foreign Medical Institution Regulations, 2002. This requirement shall not be necessary in respect of Indian citizens who have acquired the medical qualifications from foreign medical institutions or have obtained admission in foreign medical institution before 15th March, 2002.
You can also check here to visit the article-
https://www.google.co.in/amp/s/medicine.careers360.com/articles/fmge-eligibility-criteria%3famp
Good luck.