Hello, i am currently on the mini pill and i have been using it for about 3 weeks now, in the second week i was bleeding for about 12 days, i have been unusually tired, i haven t been getting any sleep, my breasts are getting larger and sore, i have been getting headaches which i don t usually get and i have been feeling quite unwell. I last had sex 4 and a half weeks ago, is it possible that i could be pregnant?