TTC potentially could strain relationship?

Idk I’m thinking worst case scenario if we end up not conceiving I’m worried it may be a deal breaker. I already have a child from a previous relationship but for some reason this time around it’s taking longer to conceive. Last time I had similar worries but they went away since I got pregnant quickly. However this time I’m on cycle 7 and haven’t gotten pregnant.

I’m unsure if he’s the problem or if it’s me. I went to get blood work done and the dr confirmed I’m ovulating. So idk the next thing it could be is my tubes are blocked or there’s an issue with my uterus. I have another appointment scheduled for the one yr mark of us TTC. But idk I feel like he might leave me for someone else if we aren’t successful. Like I get people wanting kids because I do want more children but it’s so hard being with someone you love and potentially finding out like oh that may not happen because for whatever reason y’all aren’t producing children.

So it’s devastating entertaining that idea, and what could come after ;(. I’m crossing my fingers this is our cycle tho! I also have relief that I haven’t gotten pregnant yet tho bc another child would mean an extra daycare bill I’d have to figure out how to pay. Right now I pay $300 for my daughters daycare while I work and my mom helps to watch her. But it would potentially be a struggle with a 2nd kid…so there’s pros and cons to not conceiving just yet.