Yet another question about my OPK'S?

This is the first month I've been using an OPK (the Wondfo brand from ebay). For about five days, I had a second line which was about a shade lighter than the control line (it was progressively darker, but never quite as dark as the control line). I've been having wet cm, but no EWCM,although I usually don't. Today I still have wet CM, but the second line is almost gone on my OPK. My husband says this is probably because I'm using a cheap test strip, but I'm not sure. Does it sound like I ovulated, or does it sound like I didn't ovulate at all this month? Last night the test line was pretty dark, but still very slightly lighter. Today the line is almost gone. Does it sound like I had my surge last night? We BD-ed last night and used Pre-seed, and I'm wondering if we should again tonight. Any ideas? This is all so confusing! Thanks!