Cycle day 54 spotting since April 1st bfn

I had af March 13th started spotting a brown/red color April 1st sometimes it's a light pink or red.April 24 went to the ER due to back pain. Both urine and blood were a bfn. So I made a doctor's appointment may 1st had a pelvic and pap done no signs of infections or irritation. Have an ultrasound on the 12th. Breasts hurting, backache, headache,metallic taste in mouth,and very severe bloating. :( please help