1. The history seems to points towards external skin tag.
2. since bleeding came as few drops: could be due to piles.
3. pain,heavy bleeding,burning sensation is not there acute fissure-in-ano, can be excluded [but requires general surgeon
examination who will do a per rectal digital examination, to look for hard mass in anus or rectum
to be sure]
. If you are constipated manage constipation
. [since you strain, before using the bathroom], more roughage in diet, drink more water.
. if bleeding was there [mild], still ask for colonoscopy/sigmoidoscopy
to rule out malignancy in colon or rectum.