I’m 22 and I’m not sure if I’m miscarrying or

Patient: I’m 22 and I’m not sure if I’m miscarrying or have a late cycle. I’m usually pretty regular but today makes me 16 days late. I have been having pregnancy symptoms such as frequent cramps, headaches, urination, nausea, etc for the last 2 weeks straight. This past Sunday my fiance and I had intercourse and immediately after I saw tanish pink discharge and went to the ER. Prior to going to the ER I had taken 3 pregnancy test in which all came out negative. Took another at the hospital that also came out negative. Couple days after going I started having vaginal pressure that has been uncomfortable but dismissed it but now I’m bleeding like I started my period. I’m scheduled to go see my doctor this Friday but now I’m nervous and extremely concerned. Did my period come late or am I experiencing a miscarriage?

Doctor: