Is my marriage falling apart? how can i make things work?

i have been married for four years now i'm 25 stay at home mom and my husband is 32 and we have 3 boys. we were very much in love while we were dating and when we got maried it was ok at first but about a year ago things started changing, he's not the same person as he was when we were dating, for example hes's not that loveable toward me, dosen't help me with the kids, always makes comments about my body or makes fun of me when i talk to him about what i'm feeling or how i'm alway's mad. it's not that i'm alway's mad it's just that he's not putting his part in the house and i could never have quiet time to myself he's just not the same it's like he dosen't care when i tell him how i feel and what we need to work on he thinks i'm just picking on him but i'm not maybe i just want a little bit of his attention since we never do have any time for ourselves and i feel as if he dosen't love me any more i don't know i just want the man i fell in love with i don't know what i even feel for him anymore due to what's going on any advice for you woman out there that had something similar please help!!! thanks