Talk to Gastroenterologist on Bright Red Blood Drops After Stool

I've seen twice 2 to 3 bright red blood drops after passing stool in the last month. I usually face a lot of constipation issue. I do eat vegetables and drink lots of water. I also go to gym regularly but still face constipation. What should I do ? Is there anything to worry about ? Any thing to take to get rid of this issue ? Please suggest something and thank you in advance.