OPKs positive since Sunday

I have had a positive OPK since Sunday. It was just a normal positive Sunday and Monday and then got blazing dark yesterday and is still super dark today. I always test until I have a blazing positive and it then tapers off the next day, because with charting I typically ovulate the day after a blazing positive. Now I’m confused and wondering if I should keep BDing. It’s so hard during the work week because my husband leaves for work ten minutes after I get home and comes home about twenty minutes before I have to get up and ready for work.

Anyone ever have prolonged positive OPKs like this? I am worried something odd is going on. To BD or not to BD 🤣