is this a sign

Is
So I usually drink like 2-3 cups of milk everyday and I absolutely love the taste of it and crave it but the last couple days I don't want it anymore which is totally abnormal for me. I tried drinking some and I could barely stand it! I've also been really exhausted the last couple days and loss of appetite and my entire body is sore today. I'm 7dpo. Could this be a sign?