Did we BD enough?

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Hello ladies. My SO and I BD 4 times around my LH surge. 2 days before my LH surge and the day after. I had my surge on 12/22/15. Then we BD again on Christmas. I had no ovulation symptoms this month. No sore breasts or lower abdominal twinges. It's been 3 months of tracking but 13 years of no baby luck.....what the heck. I'm 36 years old trying for baby #2. :(