Hi rach!
Don't stress too much hon (I know, easier said than done). Each cycle is different. Sometimes we don't o at all!! The cycle I conceived this little one I was told I hadn't o'd, so really take it with a grain of salt. Your body is probably still getting back into gear, and unfortunately it takes a different time for everyone. But patience (sigh) and perseverence will get you, and all of us, there!
Big and I TOTALLY understand the frustration!!