Advice ?( HELP)

It could just be pms but I’m not sure and I guess I’m in my head about all of it but i just don’t know.These past few weeks I’ve felt horrible my emotions are all over the place and I’ve threw up once and been feeling nauseous ,I’ve experienced breast tenderness and just been feeling off I’ve took a pregnancy test about a week ago and it’s coming back negative I just keep having this feeling I am pregnant and it’s really hard for me to get into any doctor right now due to this pandemic , does anyone have any advice to keep my mind at ease?