TTC for 7 months

I know I know, 7 months isn't that long... but it happened so easy with #1... At first I blamed it on nursing, then on timing, but for the past few months everything (should have been) on point... I'm doing OP tests, we tried the SMEP, then just every "green " day... I'm in my green week again and trying to not stress, but man, why is it so hard this time around?!? Sorry to vent 😕 hubby says relax, it'll happen.... but I'm starting to wonder if something is wrong...