At the end of the day I feel like I’m a very difficult person

After a conversation with a close coworker i have come to realize I might be a very difficult person. I have a low sex drive, low self esteem, And I have no drive to much of anything. When I first started dating my boyfriend four years ago we where very passionate and sexually active and after being pregnant with my daughter I feel as if it all changed. When I was pregnant I had no desire to physically touch him. I didn’t want to kiss him longer than a few seconds I didn’t want to have sex for months at a time. It took me a while to want to be physical after my daughter was born and now I’m pregnant again and I feel the exact same. Even before this pregnancy it was maybe once a week and I did it because I wanted to for him. Not for me. My coworker had mentioned I need to spice up my life and go on more date and pamper him more and dress up for him more. That he probably doesn’t love me and is just with me because we have kids and he is comfortable with this life. I feel like I’m such a problem. Maybe eventually he will find something better.