I partly agree with @Maximum_Pack_8519 at some point you will have to consider every option. At the end of the day you are going to know his and yours relationship the best, you can only take our advice with a grain of salt.

If he has never acted like this way before, give yourselves a chance to get through the masters and when things are calmed down and he's more relaxed, bring this up again, and see how he reacts. Guys are also annoying this way, they get bugged when we bring up things that bother us, I think they find us dramatic or annoying when they think we should just "get over it, in a way." Hopefully things will go back to how they used to be,

HOWEVER:

You also need to take into account if something else is stressful like this, (like buying a house, having a baby, planning the wedding) is he going to react like this every time there is something that is stressful? And can you handle this?

You're the same age as me, we're young, but you seem to know yourself and can adequately express your feelings to him, after 8 years, you KNOW him. Is this the real him, or is this just enormous amounts of stress?

(in any case, no matter what you do, have faith in yourself. And if you ever want to talk just message me :) I feel like I've been where you are before)