Girls, please advise about Utrogestan! I was admitted to the hospital …

Girls, please advise about Utrogestan! I was admitted to the hospital a week ago for dizziness (I've already been discharged). They said Utrogestan can cause this because I take it orally instead of using it vaginally. Just before that I bought a pack and asked the doctor if I could finish it and then switch to suppositories, and they told me that the same tablets can be inserted vaginally! Is that true? I've never heard of that before.