I'm on the cerazette pill, i am 17 years old and 5.6 I had sex 7 weeks ago and only just now I have had sore nipples, I had a period after the sex but my nipples are quite sore now, I have not put any weight on intact my clothes have got bigger and my boobs have no grown, my nipples are quite sore for the past 3 days could I be pregnant? I'm very worried !! What else could be causing this?!