Im Currently 34 Weeks Pregnant And Have Threadworms Theyre Extremely

im currently 34 weeks pregnant and have threadworms theyre extremely itchy, i had them not so long ago and they went away after a few weeks!! im constantly washing my hands before i eat and after and after toilet, i have washed my sheets and change myself every morning how do i get rid of these? and how long will it take as i dont want to be in labour with them!! how embarresting