Can weed affect your ability to get pregnant?

I'm just super unsure I'd like to have a baby some day (in a year I hope) and my boyfriend and I have stopped using protection. But I haven't gotten pregnant and it's been 6 months without protection. Yes I'm tracking my ovulating days and such!

But he does smoke weed probably 2 or 3 times a day. And I'm wondering if that's affecting my ability to conceive. Thoughts?