Hi, I'm a 26 year old girl, after the first night intercourse I have got some problem.
There is some kind of sticky brown discharge is happening with a very little amount of blood and a very little burning sensation is also there.
My question is, is there any abnormality in this case as this is my first intercourse.

I think you are OK. Menstrual blood/tissue turns brown when it's old, that's all. And it is common to have a usually clear or white sticky discharge any time (and it's brown from being mixed with blood), whether after sex, mid-cycle (and some bleeding mid-cycle possibly too), or just randomly. You also might have bled from the tear of your hymen, or from small tears of tissues in general. The slight burning could just be from that. If it continues, however, you need to see a doctor about a possible infection, whether in your urinary tract (UTI) or a disease (STD) transmitted to you by your partner. If you want, wait two days and answer below about how you are doing.