Painful wax-- IB

I normally get A Brazilian wax every 4-5 weeks, so much easier than shaving.  I have been going for almost 2 years now and never really am bothered by the pain.  I went on Thursday and could barely hold back the tears and slight swearing.  My esthitician was surprised and stated that I never flinch and asked if I was going to be on my period soon.  I told her no, I am 10 days from that.