I think I ate a bit of sand?

I went to the beach today and we had food. It was windy and there was sand EVERYWHERE. The bathrooms didnt have running water so I couldnt wash my hands before I ate burgers. They had a bit of sand on them but I still ate. Then later I felt sand on my lips and a very little bit in my mouth. Will I be okay? I won't like vomit or anything~?