Sick sick sick

Im 18w now and im having bad upper back ache & cough & also keep vomiting + no appetite at all …. Despite that im hungry i ate a little and im done.. then i vomit out again the food i eat. And is not smth i can control also i feel v sick due to the ache at the same time im worried my unborn baby never get nutrients bc i no appetite eat . Should i go A&E for further check?