BHU offers 31 seats in the applied microbiology course. Your rank being 18 in general and 7 in female. You have a very strong chance of getting the seat in the given course. Apart from the seats reserved for OBC, SC, ST, PWD and BHU WARD, you will get a seat in the course. 

The counselling session will begin in the first week of July (near 4 July). Hope this answers your query, if not, don't hesitate to write back.

Good luck with counselling!