maybe I didn't ovulate?

Ci
Never got a strong double line on the OPK, just came off birth control after 15 years..it's my first month ttc, now I have cramping but it's like 10 days before AF. We just BD every other day starting like 7ish days after AF started...am I doing this right? ITS SO FUNNY how you try your whole life to not be pregnant and then it switches so drastically haha...thoughts?