Concerned about dry socket

[Macguy59]

Had a molar surgically extracted (due to one stubborn root) approximately 4 hours ago. The instructions that were handed to me didn't say anything about not spitting or using a straw. I have spit twice (though trying to be careful) and used a straw to drink a small amount of water. Both are apparent no-no's from what I'm reading online. I've already got myself worked up about dry socket now. How quickly does the plug form and if I have dislodged it or loosen it will it reform ? I don't really see much of any bleeding now. Do I need to get back to the dentist tomorrow to have them check it ? Thanks