Is this normal???

So I’m on the pill vieniva and I get them shipped to me online. I’ve been using it since the beginning of October. The week of thanksgiving and i has started my period, I was then supposed to start my new pack on the first week of December. But I had gotten a new card and forgot to update my account with my new card info so that I could get them shipped to me. Last week I finally started my 4th pack and I’ve been having some different side effects. My stomach has been having cramps and I keep feeling pretty nauseous throughout the day. I also have been pretty bad at getting good at taking them everyday . I’ve been having to take two the same day cause I forget but I am getting better. I know this can cause me to feel pretty sick but I don’t know I’m just kind of stressed. I just wanna know if anyone else has been through a similar situation and if they have any advise if I should be worried or not.