Just need to vent

I had a MMC in November and have been trying since December to get pregnant with my second. Negative after negative and it’s really starting to affect my mental health. I am having anxiety attacks everyday just thinking about not being pregnant. I am 24 and have no issues so why is it so hard now? I cry all day every day. People say be lucky you have one child, and I love him so much but my feelings are valid. I want another so bad and it’s so devastating.