TTV OVULATION QUERY

I am TTC for the first time, I have 3 period/<a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation tracker</a> apps, however they all say my ovulation is due on a different date. All confirm I am during my ‘fertile window’. 1 app says I had my ovulation yesterday, the other says it today and the 3rd app says it is on Saturday. I am not really sure which to go by because this is the first time I’ve tried so not particularly taken any notice on symptoms etc previous months. But, yesterday and the day before I had bad cramps throughout the day and on those days my cervical mucus has been like egg white, really stringy eggwhite and loads of it. Today, not so much and not really any cramps but I have felt nauseous for the last few days. It was too late for me to order any ovulation strips, so just want to know your girls opinions on whether it’s likely I have now ovulated already given the symptoms? I have had sex every day for the last 3 days, should I go again?

My last period started on 9th April and lasted for 5 days if that helps.

Thanks for you help and would love to hear your opinions and experiences x