wow, what length is your cycle? Do you have a short luteal phase?
If you know when you O then yes, you should BD before, during and right after to be safe. To know when you are O then opk's work grea or like TinaR10 said, CM is easy to read for some. If you just BD every other day starting on day 10 I wouldn't stop at day 16, many of us O later than that and you would miss as mine was 17th last month and 19th cycle day this month.
I would say to have sex every other day for 7 days starting from day starting from day 10 of your cycle....so you would have sex on CD10 then, 12, 14, and 16.
you can check ur cervical mucus to see when u ovulate or u can use opk test with charting ur temps to find out when u ovulate. ovulation is dif for every women and u can ovulate early if u have short periods or late if u have long periods. intercourse should be when every u want lol but during ovulation u would wanna do it 2days before and the day of and after to be on the safe side