I feel like a terrible mom!

I weaned my LO from breastfeeding a couple of weeks ago, he’s 18momths, wasn’t feeding much mainly just night time and since I’m pregnant I’m pretty sure I wasn’t making any milk anymore. He may occasionally put his hand down my top but otherwise doesn’t look for it. But now he won’t let me put to sleep at night, comfort him during the night and I can’t get him to nap during the day time. I literally feel like the worst mom in the world, it’s gone from him only wanting me to now not wanting me at all and not being able to comfort him.