Just found a good and inexpensive source of Food Grade DE. Found it easy to swallow with OJ, and had no adverse effects in a few days of taking it twice daily. Had heard of this as a good remedy for parasites years ago, and just tried it. Too soon to say how much effect it will have.

Sprinkled some lower grade DE around pet areas and hope we do not see fleas anymore!

DE will not be enough to kill your parasites as it is likely that you have more than one type. The DE will kill some worms and flukes and their eggs but you may need stronger stuff.
Start with the DE. Start slowly with about 1/2 tsp. once per day. Work slowly up to 2 tablespoons per day. Divide the doses over the course of the day. Take on an empty stomach, dissolved in water. USE FOOD GRADE ONLY. Do not inhale the dust that will be created when you mix it with water. Keep taking the DE for months.
Check your stools by squishing them against the side of the toilet with a plastic fork. Pull out anything that looks suspicious and put it in a jar of warm water. Put the lid on the jar and swish it around to clean the specimen. Place the specimen on a white paper plate. Put a quarter next to it for scale and write the date on the plate. Take a picture and then throw out the fork and plate.
See what you have. This will show you what types of helminths you have but will not show you if you have parasites in your blood. You need specialized tests for that. Post your pictures on this site and someone may be able to help you identify them. It is especially important to identify tapeworms.
There are a number of protocols on this site. Do not let anyone tell you that you can cure parasites quickly or easily. You will be waging a war with them for months. Find a protocol that you can live with and then switch to another one after a few months. Parasites may be able to adapt quickly.
Good luck. Search the success stories for more information.