Pregnant and sad

Im 16 weeks pregnant and always sad. I cry everyday. I feel alone. I can’t remember the last time I was truly happy. I tried talking to my mom she said I’m doing to much complaining. I tried talking to my S/O and we got into a really bad argument. I told him I feel like I’m breaking and he yelled at me saying maybe by you being broken you can fix yourself to be better. He constantly tells me what im not doing right. I kind of wanna give up on everything. I have a hard time eating and drinking. Im scared to talk to anyone anymore about what’s going on. I just feel like im living in darkness everyday. I thought being pregnant was suppose to be fun, happy, exciting. I hate to say it but I don’t even understand my purpose of living anymore. I sleep my days away trying to escape my thoughts and emotions but as soon as I wake up they come flooding back. I keep telling myself just get out and do things that make me happy but I don’t know what makes me happy anymore. I need help. Nothing I’ve tried is working.