😢Pinworms (threadworms) & pregnant

Sigh.... As embarrassing as this is I'm looking for some help.. I HAVE NO CLUE were I got these parasites from I'm a very clean person😢... but I was told I can not take any prescription while pregnant until my 2nd trimester because it's a class C... Has anyone taken the Albenza for parasites while pregnant and baby was OK? I'm still worried.... I'm taking Diatomaceous Earth FOOD GRADE (this one is safe for humans it was bought at the vitamin health store) I was told this was OK while pregnant, anyone else taken it while pregnant.. I'm currently 6wks.... will these things (parasites)harm my little one?