Spotting or Vaginal Bleeding? ?

Hi Mummies. I would like to ask.. I have had my spotting 3 days in a row last month just few days before my menses date. I knew when i had this spotting and no menses, i should be pregnant. So after doing test & when to poly to do test, i am confirm to be pregnant @ approx. 6weeks +. KKH have yet to contact me for an appt with them ? But today this morning, suddenly i had another spotting/bleeding on my panty liner. Should i be worried? ? I have had a miscarriage previously & do not wish to have another miscarriage ???