Help me i feel so anxious 😔

I know this app is for fertility and period tracking ect... but i feel so alone ive been having so much anxiety and its been years scenes i had it. Ive been having chest aches that come and go and ive been thinking all day im gonna die and ive been extremely scared its been gling on for a week now. It all started scenes i got the covid vaccine i think i scared myself i was really scared to get it. Ive been dizzy and all this anxiety is just bad i wanna cry it makes me feel a lil better but the anxiety keeps comming back im so scared idk what to do im scaredd to die im a single mom and its been taking a toll on my life.