TTC our 2nd baby

My husband and I have been TTC our second child for 6 months. Our first baby we were pregnant right away. I use Glow and ovulation strips to determine when I am ovulating. We have sex every other day during that window of time. I exercise regularly and eat a stict Paleo diet, no caffeine, alcohol or tabacco. I'm getting discouraged. Is there anything else I could be doing to help this process along? Thank you.