Relationship and emotional help???

Lately I've been feeling unattractive. I feel like my husband isn't interested in me anymore and I'm paranoid that he will leave me. I have 2 kids. 1 child that we have together and another that I have from a previous relationship... I'm a stay at home mom... I know some days I slack because I'm exhausted.. my husband does a lot of manuel labor and I understand he has every reason to be even more tired at the end of the day then me.. I want to be perfect to him. I love this man so much I'd do anything for him. But we've had a very bumpy road the past year and a half. We went from being so in love, to hating each other, to trying to work on things,, to just adjusting ourselves to be around each other. Lately I've been giving him more attention and trying to give him love but I feel that he's not interested.. he tells me he's to tired or sore.... i feel like he's pushing me away. He still tells me he loves me and he is sometimes affectionate towards me.. Can anyone help me... i don't know if this is a sign of depression, am I over reacting,, do I need to just give him space but continue to show him the love I've been giving him???