Root canal led to what?

Yesterday I went to the dentist to get an old filling replaced. Well, the dentist found the tooth was in need of a root canal. My dentist just kept going and two hours later I was maxed out on my dental benefits and the proud owner of a new big filling and two smaller ones. Well, this threw off my whole pumping schedule. I ended up skipping my 2pm pumping session. I went ahead and waited till 8pm to pump to see if that affected my supply at all. I ended up pumping more than I would have at my 2pm and 8pm session combined. So, it all worked out in the end. I am debating whether to try that again today. I am just afraid I may loose my supply and rev up my fertility. I am one of those lucky moms who do not have a period while they are nursing. I am not ready for that to resume. We will see what happens.