Did I miss it?

I haven't done any opk. Don't feel like peeing on a stick. Ttc # 6. I've had 5 losses. From the charts did I miss my chance? I might do opk for a few days to see if I o. I might have. If so.... Oh well. Feeling really bummed out. Thought that this was our keeper. Been really down. I've had no sex drive, and I still just look at a pg girl and cry. After 5 you would think that it would be easier. Truth is, it's not. I want my baby so much. There's nothing wrong with me or so. Did a search on my med and it causes heart defects in fetus, and possibly lung problems