TMI maybe but I am curious

I normally have a real issue with bowel movements especially after I eat dairy. I normally have liquid stools but the past week or so I have been severely constipated. Could this be an early symptom of pregnancy? We have been TTC for almost a year but I just feel strange and different this time around. Any suggestions and advice is greatly appreciated. Oh! And I have been have cold symptoms as well as I am always hot.