Opk kits

Dreyana

So for this whole week I been taking the opk kits and the line is always light never dark so when I tracked on the calendar online it’s saying my ovulation is today tomorrow so I took a test this morning and still light line

My period started on the 16th ended on the 20-21st .....

I just got of the Paraguard on the 21st of this month my period started acting kinda funny the last few months on it....

How should I figure this out