Don't be sorry for a negative attitude! Believe me, I understand! Sometimes it's just so frustrating!
It's hard to say whether or not to call it a positive, BUT regardless, it IS surging to some degree, which means that you may O soon. So I would keep on BDing until you O or the tests become obviously negative several days in a row.
There are different schools of thought about BDing every other day to give the sperm a chance to build back up. Everything I've ready says that it's fine to have sex every day unless your husband has a confirmed low sperm count. But on the other hand, maybe hubby needs a rest! lol
Another thing I read about OPKs - when looking at the test line, sometimes the dye is darker on one side, in which case, you're supposed to compare the darkest part - look at the picture on #13 here: https://www.peeonastick.com/opkfaq.html#13
All this line-squinting is why I like to use the digital ones when I see my LH concentrations going up. Because I can just get a yes or no, and write it in the chart. But on the other hand, I got a few positives from the digitals last cycle and never ovulated. So maybe that's not the best way to go!
It's all so confusing!