please help :(

Hi everyone! So this last Sunday I started birth control for the very first time. I’m on the pill vienva. I know absolutely nothing about birth control and my mom is not willing to talk to me about it because she’s mad I’m even starting in the first place, I read the pamphlet when I got the pills and I read all of the symptoms and how to take it stuff like that. I saw the pamphlet that within a few hours after taking the pill it wasn’t good and you need to take another one or something like that. Although I didn’t go up or have diarrhea after taking the pill I have felt nauseous the past two days which I know could be a common symptom of the birth control. I also had diarrhea today( it’s now Tuesday) and I and I know that sometimes that can take the birth control out of your system? I don’t know I might sound crazy and I might might sound like I have no idea what I’m talking about But my mom is not willing to tell me anything about birth control and hasn’t told me anything about it. I’m just stressed about this I wanna make sure I’m doing it correctly and I’m not messing up on anything. Please let me know if what I have experience in so far as normal and what I should know for sure in the future. Thank you guys so much and please be nice in the comments I’m super stressed out about this and I just need some support thanks!!