Can you get pregnant from dry humping with clothes on and while on your period with tampon in?

Of course not: You need to get a basic knowledge of human biology, especially as it relates to reproduction. I'm sorry misinformation is so widespread, but you owe it to yourself, whoever you come to love, and to all those around you to be properly informed about this very important business. Ask your phyiscian to recommend a good book for this very important task.