wearing a light tampon when you are expecting your period if you could be pregnant? I always wore them when I was due on before I started TTC and have never got an infection or anything. But can it affect the embryo if you are pregnant? I just want to wear one for work tomorrow morning, as I don't want to be leaking everywhere if I come on a day earlier than expected. I hate pads and a panti liner wouldn't catch much in full flow. It would only be for 4 hours. What do you think?