I would just use one drop for a while until you feel back to normal watching the spleen area carefully. If it get worse you might consider stopping for a while. You say you might have parasites so you could be killing something off.
I see that you were considering Huma worm at the same time. I would just use one at a time so you know what is working for you and what is causing side effects. Plus they will kill off more quickly causing extra detox issues.
I had a swelled area in my lower stomach area where I had surgery decades earlier.