In need of advice..

So I've had a long line of abuse starting from the age of 5 from my father then my forced to be married with husband and I'm finally free. I haven't had a flashback in awhile. 
So my husband now is very supportive, works hard to provide for us ( we have 3 kids together) and lately he's been working extra long hours. Most times he just comes home to eat, shower and knocks out. My kids are 7, 18months and 6 months and I'm feeling the exhaustion but that's not my problem I've been getting flash backs, last night I couldn't shake the memory of my father molesting me and I tried to find a reason as to why he did it.. I drove my myself insane and didn't go to sleep.. 
I have no idea how to tell my partner cause it seems like I'm taking out all my anger out on him on his only day off.. Ugh