This month I switched birth control pills (from Generis to Microgestin 1/20). I switched after my seven day off week & started the Sunday after my period. The first Friday of the first week on the Microgestin, I missed a pill & had unprotected sex. It's been a week since then & the past two days I've been extremely tired & fatigued. I've been a little dizzy & felt like I had a low blood sugar which isn't normal for me. I don't know if it could be side effects from the new pill or if I could possibly had conceived that day. I'm a young girl & not looking to be pregnant so I'm worried & wanting to know how high the chance of pregnancy could be. Thanks

You can be, but it's too early to tell.