Heartburn / heart attack?

I’m 13 weeks pregnant 20 year old female and I’ve been having pain on and off on my chest under my left breast for the past week, yesterday it turned into my whole chest was on fire starting at under my breasts going up into my upper chest and back, even sometimes my stomach too. The dr sent out an ambulance and they checked me over, temperature, blood pressure and ecg. They said mr ecg had little spikes in but nothing major and didn’t seem conceded to take me in. Temperature was normal at 36.6 and blood pressure was 111/70. The pain is there constantly and last night didn’t stop burning even after taking gaviscon and is still there this morning. The chest pain is like sharp pain or goes from feeling a bit heavy. I have pain in my left shoulder and arm too and in my right too now. Again I told the ambulance that and he basically said because I have anxiety it was in my head 🤷🏼‍♀️. I see the dr again today but it seems nobody is really doing or giving me any answers and I’ve been reading about heart attacks in women and it’s freaked me out abit. Any help or advice would be appreciated.