Could I be preg . Nausea and horrible taste in mouth

ive been TTC FOR 4 months now . My last proper period ended the 29th of June . I starred to bleed the 20th of July but was only when I wiped it lasted 5 days .. I wasn't due  period till the 28th I think .  

this morning i felt very sucks and end up getting sick but I was just b could this be morning sickness ? I also have this horrible taste  my mouth like a bloody / metallic taste ....

could i I be pregnant ...