The Sides of the Pot

Hello! I've recently bought a Diva Cup (been researching cups for weeks and decided I must have one) and I decided to sterilize mine so that it would be ready for my period, which is coming in like, a week. So I have a question... When it's in the pot, the boiling water tends to push it to  the sides. Now, I stood there and made sure it wasn't touching the sides for too long while it was in the water with one of those big plastic serving spoon things that has the holes in it because I don't know if it's supposed to touch the sides or anything. I noticed that it would roll around on the side, so that it all even touched the side of my pot. Should I just leave it like that and let it's do it's thing, or keep making sure that it stayed away from the side of the pot? (I looked around to see if this question has already been answered but I couldn't really find it, so sorry it it has been and I missed it!)