Cycle and ovulation questions

Tiarne • 21 married and TTC #1
My cycle has been a regular 33 days for the past 4 months since coming off BC so does this mean I'm ovulating around the same time every month ? Or can it vary we don't temp or use OpKs etc ... we are just going about our normal business without worrying what's going to happen and stress about it, this is our first month of TTC my period is due in 10 days I use the ovia app which I love and still working out the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> according to them I had already ovulated I had ovulation cramps and the slight back ache I've been getting around the time since getting off my BC so I know I was ovulating my app told me I was done ovulating 2 days ago but this morning I had one medium sizedamount of clear egg white CM and a thick white bit in it but that's all if I insert a finger inside it's just moist and my cervix is high from what I can gather so I'm just wondering what's happening right now