Week5 suddenly no symptoms, ist sign of miscarriage?

Week4 i had very bad cramps & headache daily, early week5 i suddenly lost all symptoms. I started popping Dydrogesterone (2 pills/day) since last Thursday (gynae prescribed me since I am having spottings. Yesterday morning I had extreme tummy ache (~1hour) with fainty feel. It was not due to hunger, as I ate heavy breakfast at 930am. The pain & fainty feel lasts ~1030am to ~1145am. I feel so worried, is this a sign of miscarriage? I dont feel tired, headache etc. I felt very "normal" like before I was pregnant. Is this a bad sign? What should I do? #worry #scared #Needadvice #1stimemom #pleasehelp