I'm an 18 year old female and I just started taking adderall this...

I'm an 18 year old female and I just started taking adderall this morning. I've been extremely anxious and nervous. But when late afternoon and evening came I started feeling very very sad and depressed as well, which really sucked because my boyfriend had this big romatic dinner and gifts for me for valentines day and I couldn't even be happy even though I wanted to. I cried severeal times today. I think I was also pretty irritable. I really want to know how long these side effects are expected to last?