Urology/sex health? ive noticed orangeish gelatin like substances in my semen. some as big as a kernel of rice others size of a grain of sand. no pain ejaculating or peeing, negative on stds. was fingered anally a month ago, unsure if that matters?

What you described is not a cause for concern and anal fingering would not affect your semen. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/sa

If this persists you should see a Urologist. If the fingering was for long and traumatic then it could be the cause- not otherwise