Advice please! I don’t think I’m ovulating?

Im 31 and know NOTHING about TTC, really. I’ve been reading one book but other than that and this app I’m a total newbie. I had an IUD for 3 years, got it removed at the end of May and immediately started TTC. I have been tracking my cervical fluid, temperature, OPKs, and watching the calendar in this app. After my period finished I haven’t had a spike in my temperature and I haven’t had any cervical fluid consistently. This was my first period after having my iud out - started at the beginning of July and lasted about a week. The app said I ovulated yesterday but if there was no cervical fluid and no change in my temperature could I have ovulated? Does anyone know if this is normal while my body adjusts to having a period again?