My dog throw up this morning?

ok sunday i fed my dog in the morning around 9:00 (the time i usually feed her) i was going out later so i fed her a little early than i usually feed her(i fed her around 4 she usually eats around 6:30) monday i took her out around 8:30 she had a normal poop but she was also trying to eat grass but she wouldn't eat her food so she ate some grass and in the evening around 6:30 i gave her some food now yesterday she was eating normally and she pooped normally but today she threw up yellow bile around 10:15am and then when i took her out to go to the bathroom she had diarrhea (around 11:30) i haven't fed her any food yet because i heard you should with out food for at least 24 hours and then slowly introduce bland foods (last time she ate was 6:30pm yesterday) so i'm wondering should i try to feed her rice and boiled chicken tonight she seems hungry and she did drink some water last time she had this problem she didn't have anything wrong with her no parasites or anything and the vet sent me home with centrum for the diarrhea and throwing she was fine after a day or so im not able to take her to the vet(im in a wheelchair and i need someone to drive me) until friday or saturday so im not sure what to do could this just be a little stomach bug ?