what could this be ?

background info started pill on the 11th April 2018 I have missed a few pills because I lost my packet. me and my boyfriend have sex very regularly and so yes unprotected sex has occurred. I bled for 3 day not long after I started taking it . We hadn't had unprotected sex before the pill. my cervix is high and soft and this bleeding happened today. yesterday I had pelvic pain and abdominal cramps . I get mood swings from the pill and recently getting more frequent . the pain was very bad yesterday. but as I said this bleeding occurred today . eve says I'm ovulating today but my cycle isn't regular at all.