Years ago before I had kids I could wear with no issues. But after having kids the tampons just don't ever seem to fit right. After awhile (like an hour) they start to work themselves out. I feel as if I am putting them in the right way because I don't feel them or anything when I put them in. I use the regular size tampons (not super or slender or anything). What causes them to work back out so soon after putting them in? Also in case this makes a difference I have a back tilted cervix.