Hi Bindu,

             First of all, congratulations on your score. Based on Previous years cutoff 503 sore is little less to get a seat in Government medical college in All India Quota because all Government colleges cutoff for UR category in 2018 is 510+. To know the cutoff for different government medical colleges under all India Quota then please visit the link https://medicine.careers360.com/articles/neet-cut-off-for-government-colleges

             But you have good chances to get a seat in AP government colleges under All India Quota for your score based on 2018 cutoff. To Know cutoff for AP government medical colleges under State Quota and All India Quota then please visit the link https://medicine.careers360.com/articles/neet-cut-off-for-government-colleges

    But remember cutoff for colleges varies based on different factors so keep trying......

I hope this will help you.

Feel free to ask your further queries.

All the best.

Thank you.