5dpo blue vains on boobs. nausea taking protonix (pantoprazole). period not due for another week. cramping and constipation. pregnant or no ?

Toss a coin?: As you probably know, it is too early to tell if you are pregnant. All of the symptoms you describe--nausea, cramping, constipation can be part of the luteal phase of your cycle often called PMS/pre-menstrual syndrome. Home pregnancy tests are not reliable until after the day you actually miss your period. I think you are going to have to be patient and wait until then. Best wishes!