Should I call the doctor?

My 6 month old has had a fever for 2-3 days now and I figured she was teething because she has watery stool too. Well she has been projectile vomiting after nursing as well and just super irritable. I have to swaddle and hold her and she’s been lethargic too. She got her vaccines on the 7th so I don’t think it’s that. Does this warrant a visit to the doctor?