If my mark in neet 2018 is just around 200 will i be getting medical seat ?

Greetings
With a score such as the one you have achieved, chances are
less that you'll get a seat, even while considering reservations
Scoring above 400 stands a fair chance in getting a seat in
NEET UG 2018. Scores above 500 are almost sure to secure a
seat in a government medical college
However in case you fail to secure a seat in a government
medical college you may consider taking admission to a
private medical college
In case you are willing to drop a year you may prepare once
again. With all due efforts and hard work I am sure you will be
able to secure a much better rank next year
I hope this piece of information proves to be useful to you
Please feel free to refer back anytime in case you have any
further queries
Wish you all the best in all your future endeavours
Good luck.

You just might, depends a lot on the cut off for 50th percentile. If you do qualify, most probably you will get admission in deemed universities or private colleges.