Opinions please

My SO and I have been TTC since November and so far, no luck. I don’t know if it’s stress or what. I jumped in right away taking opk’s and using Preseed and everything. Should we take a break from them or keep using them? I know it hasn’t be too long yet but I’m just so stressed and so scared. We both want this so bad. I’ve been stressing more about it because my sister just had a baby and it just broke my heart. I’m happy for her, but I’m just so ready for my own 😭💔