That depends on your LP which can be between 12 to 16 days. LP is the time from the day after you O to the day you start your next period. Also your period isnt 34 days your cycle is 34 days. I have a 34 day cycle and I O on day 19 most times.
With a 34 day cycle and figuring the LP odds are you will O between days 18 through day 22. Now that isnt set in stone. Your best bet if there are no known issues with your husband's sperm sex every day from about day 12 til your next period starts. If there are issues with your husband's sperm then sex every other day will work to.
I strongly suggest getting the book Taking Charge Of Your Fertility and start charting your cycles.