JTS my miscarriage encounter

Since I tested positive I have mild pregnancy symtpoms like fatigue, nausea and hungry. slowly I feel less fatigue and no nausea at all. I din see anything wrong at the time. Week 5 day 1 sharp pain at lower right abdominal, went gynae for ultrascan see no sac. Referred to NUH, tested positive and still no sac. Suspected missed miscarriage or etopic. I Tot it would be too early to detect a sac (make myself at ease). Proceeded with my holiday. Week 6 still in holiday. Light spotting in yellow discharge. Google tot it is normal. Week 6 day 1 had stomachache and poo. Saw heavy mense flow with some fluid. Realized it is a miscarriage. Went to the clinic, doctor said nothing can be done as there is a small sac but is empty. The night before my miscarriage, I had a dreamt which is hinting me something is not right. And what doctor said is exactly what I heard in my dream "there is a sac but is empty." Never ignore a single unusual signs during pregnancy.