Possibly no ovulation...advice please!!

Lauren
So we've been ttc for 3 months. I stopped BC January 5 and immediately had a regular 4-day period. My cycle lasted 33 days. And this past cycle was 28 days. 
I took ovulation tests in February's and march's cycle and both months had high days and peak days. But I've been tracking my bbt and have not seen the .5-1 degree spike in February or March. This morning I was let down to see that my temp dropped .8 degrees and I was supposed to have ovulated on the 23rd according to my cervix, cm, and tiny cramping in pelvis. 
After having regular periods should my body be ovulating normally by now or is there some issue I don't know about?