Please I'm at breaking point..

So I've been married 2 years. We have 3 beautiful kids together recently just gave birth to our baby boy whose 5 weeks now. And for some reason recently ive been feeling like I'm falling out of love with my husband.. like we argue over petty things. I dont want his touch. I get annoyed with him easily. I dont know why.. I mean hes so helpful but some things he does just bothers me.. what can I do to love him again.. how can i find that spark again..help me please..