there are over the counter treatments.
You can't get rid of crabs with vaseline. I think it is best you go to your doctor. I've never heard of crabs going inside. I'm going to have to research that.
Here is cdc information for you:
http://www.cdc.gov/lice/pubic/index.html
I recommend you wash ALL of your sheets and clothing in HOT water. Or get rid of them completely and start new.