I don't know if I'm pregnant. I have been having symptoms for the last few weeks. The main symptom being sore, painful, swollen and veiny breasts. Which have been getting much bigger. They are really painful when I wake up in the morning and when I lean my arms over them. However I am on the pill and take it at around the same time everyday. I haven't been sick and I haven't had diarrhoea. However I have been on antibiotics and I don't know if this could have interfered with the pill in anyway. I had sex a day before I took them and I know sperm can live inside the vagina for 72 hours well from what I read. Also I had some spotting I also read that this can be the egg implanting and I don't get my period at all after being on the pill for 7-8 months. Please help me I am 15 and need to know so I can do something about it.