My girlfriend is paranoid about condom use. She always doubts the reliability and gets stress until next period. So I have planned for birth control pills. I have heard that it has too many side effects and it's long use might impact life after marriage as well. questions regarding this are
1)What are the side effects of birth control pills?
2)If we have sex on one day,how many days she had to take that pills to avoid conceiving?
3)Do the use of pills delay the period?
and finally ,what might be other healthy and safe alternates if she denies using birth contol pills as well?