What should i do?

Okay so im not really sure what to do anymore, so i could use a little advice. Me and my fiance have bee trying to conceive for 2 years now, back in 2014 i conceived but unfortunately that October i miscarried. It was devastated we were so depressed and have been trying ever since but it just seems so different now. I feel like since the miscarriage we have been arguing more. And feeling like we're aggravated with one another. And i just want it back to normal. I feel like we can barely talk about anything anymore.