Hello, I Stopped Taking My Contraceptive Pill About A Month

Hello, I stopped taking my contraceptive pill about a month ago after being on it for around 5 years. I am sexually active and had unprotected sex around the time I ceased taking the pill. Although there was no ejaculation into the vagina. Over the last week or so I have had very sore erect nipples, clear to white mucus like discharge and small tummy pains. Do you think I am ovulating, getting my period or pregnant?