A bit of a spike in my VL

[hereinny]

I hope i dont get yelled at for posting this twice but my first choice of where to post it may have been bad.
I have been on Atripla for 30 months.  Never missed a dose.  Worst case was when i was taking an antibiotic at the same time.  The pill looked similar in poor light and i took the antibiotic instead of the atripla.  Didnt realize it for about 13 hours.  That was about a year ago and didnt really seem to matter. I have been UD since about 2 months after starting atripla.
I have been thinking of switching to Truvada/intelence because the sustiva is wreaking havoc on my sleep.  My Dr said after 30 months of toughing it out, changing would be the sensible thing to do.  He said since i am staying in the same class with the intelence, it should all work just fine.
I went to get my blood work done before starting the new combo and my VL came in at 131.  So i guess this means i am not undetectable any more.  Not sure what to make of this and i have not been able to get in touch with my doctor. 
A quick history:  I was diagnosed with appendicitis and had my appendix removed 10 days prior to the blood work.  The was no elevated number in my blood counts so they said there was no active infection.  Just some inflammation on a cat-scan i had done that was looking for a hernia.  I also had a flue shot 3 weeks before the blood test and a nasty sinus chest cold just a few days before the blood test (yeah, i know,  im a mess.  lol).  I have also been pretty stressed lately.
Im not sure what to make of all this.  My CD4 is 555 which is about where it usually is,  actually a bit higher. From what I have read, it wasn't up until just 4 or 5 years ago that 500 copies/l was considered undetectable.
I will speak to my doctor hopefully by monday but in the mean time, does anyone have any insight on this? 
I have not started my new meds yet and dont plan to until I talk to my doctor.


Thanks in advance.