Negative opks- please help!

I have the cheapo wondfo ovulation tests from amazon. I've been testing daily, multiple times a day. The strips show a faint line, but definitely not a positive. However, I had a a LOT of ewcm yesterday and the day before. And my boobs hurt yesterday. I just did another opk and it looks like the line is actually getting lighter! I was hoping ovulation was just on the way and it would get darker, but no. Did I not ovulate? We bd'd yesterday, can I still get Preggo? I'm really confused. Please help!