Good morning! Out of curiosity, has anyone had a day/days where everything they ate tasted sour?

I'm very early on (7 1/2 weeks) and I just had the same exact breakfast that I've had the past 2 days (cereal, soy milk & a banana) and all 3 things tasted so gross & sour to me this morning that I had to spit it out - even though they're all fresh! Could this be a pg symptom? I've heard of aversions & morning sickness, but is this a new one? Thanks!