Ovulation tests keep turning up negative

An

So I’ve had a period since my miscarriage in November, and I’ve been tracking my BBT along with my CF, and I’m wondering if I’m just not going to ovulate this cycle? My CF, while EW consistency, has been much lighter than normal, and my ovulation tests have been all over the place but negative. I haven’t had any temp spikes yet, so I know I haven’t gotten false negatives. I’m frustrated, and confused.