Around 4 days ago I ate sushi, soon after stomach pain started, every day, on scale 0..10 I'd say 3 or 4.

I have NO diarrhea, blood, vomiting.
However, yesterday I've decided to vomit on my own, and pain got smaller, next day I felt better.
At night I had a mild fever, but in the morning felt much better overall.

But now I found this in my stool.
Something that looks like a worm, and eggs or egg sacs.

What could it be? and how to kill it?

I've seen pharmacy nearby has Mebendazole, 6 tablets x 100 mg.
I'm thinking of taking, how many tablets should I take?

https://www.curezone.org/ig/i.asp?i=96283
https://www.curezone.org/ig/i.asp?i=96284

Thanks