### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
i have beenn on birth control for 8 months i had unprotected sex and he ejaculated in me 3 times this month, i take it everyday around the same time i have not missed a pill this month. i have been having mild pregnancy symptoms of nausea in the morning a few days ago but i was also very nervous so my bf said it could be just all in my head from me being nervous and worried about being pregnant. i have also had frequent urinations. i took my first white pill today and i am worried i may be pregnant, i was also told that birth control (yaz, which i take) can cause thoose symptoms. i just switched back onto yaz this month so i was thinking it may be the cause of that. and if you know or are on yaz what day do you get your period like on what pill cause there are four. i use to be on yaz and im pretty sure i get it on the second pill. should i be worried at all i mean i am not going to do that again it was a very bad decision on both me and my bf but what are my chances of me being pregnant and if so what test should i take and when. thanks

### output:

Hallow Dear, If you are so regular with your birth control pills there is almost no possibility that you would be pregnant with the unprotected sex you had. You are right, the symptoms you have described like nausea and nervousness are the side effects of birth control pills. You need not worry about them. If nausea is making you uncomfortable, you may take proton pump inhibitor tablets like pantoprazole to control the acidity.  Please do not change the birth control pills frequently. Continue with one brand that suits you best. I hope this helps you. 