LH surge timing

Hi! I’ve been using opks. I have never had a positive. Yesterday morning I noticed my boots were a little sore and I was just overall aching. So I took my last one....which waiting for my new set to get here. And it was the darkest I have ever gotten. Usually the line is super faint. So once my new ones came in I tested again and that was the dye stealer. I took one this morning and it’s way lighter....so my question is....

Can an LH surge be that short? Once it’s not “peak” anymore does that mean I already ovulated or I’m going to ovulate 12-48 hours since yesterday afternoon?

Please help! Thanks in advance ladies!