Is it normal that i had this dream? *important*

Okay. This isn't a joke or anything I honestly, truly need advice. Recently I've developed feelings for my teacher. She isn't exactly 'hot' but she's a beautiful woman . She has 2 kids and is married. I talk to her more than anyone else in the class and she's told me she loves how I am. But back to the point. Last night I had a dream, that I was at her house. She asked me if I could do her laundry and pointed to this building out in the distance. I said shure (I get to see what's under all of her clothes!). So I finally arrived at the building and I saw one of her bras by the door. I don't know why, but I grabbed it and sniffed it like 3 times. Then I stuffed it in my pocket. I preceded to do the laundry and was obviously horny. She knocked on the door and asked if everything was ok. I said yes and she walked in and locked the door. We preceded to have sex and at the point of orgasm I woke up. I was still horny and I FRANTICALLY searched my pockets hoping I had the bra in there. I had the dream a 2nd time. FYI I'm a female, and bi. IIN?!