Not ovulating this month?

Lauren

Is it possible to have an anovulatory cycle after 10 months of normal ovulation cycles? We are on month 10 of TTC, and I use OPKs every month. I have been pretty regular and have always ovulated on day 16 or 17. Today is cycle day 17 and I still haven’t gotten an LH surge…it actually looks like the lines are getting lighter every day? My bbt still hasn’t spiked, so I don’t think I’ve missed my surge either. Seems odd…