Easy there- parasites are an every day part of life in earth, same as breathing and sleeping.
They've become a problem for us as people since we got dumb and university trained, but eliminating them is simple.
If you haven't died from them so far, why would you die from them now?
Take your steps calmly, ChubChub. The first part of discovering something new about yourself is yes, often fear, but there is no reason for it to consume you.
Diatomaceous earth mixed with activated charcoal powder can ease the struggle a huge deal, and it helps stop the biofilms that the dieoff releases.
If you want to eliminate them fast, use a rawfood vegetarian diet (weakens them immensely) and then do a week or two of water fasting, and try the sitting in a Sugar bath.
I have eliminated the sesame-seed looking things too. There is a simple way to see what they are- fish them out, clean them with a fine sieve under very hot water, and press them on a paper towel. If they split cleanly in half like a peanut out sunflower seed kernel, it is a seed, and if not, then it may be a segment.
Worries come in many sizes, but you are not alone, and not forgotten.
I had a similar scare recently, until I looked in the fridge and recognized I'd eaten bokchoy the day before eliminating something that looked and felt like worms.
I'd personally like it to have been the latter, but I am using DE, and that does not release whole worms, it dissects them.