are these pregnancy symtopms??

Hi there. I hope someone can give me advise on this situation. I was on the Depo shot on Nov, 2013. next shot was due Feb. 25, 2013 around that time. I decided not to get it due to horrible side effects. I was bleeding for over 2 months so i decided to go on Birth control pills for 1 month to regulate the bleeding and spotting. I was on the Pills for 1 month. I stopped on April 7,2014. I got my Period on April 11,2014. And stopped on April 16,2014. I had unprotected sex on April 22,2014 and April 27, 2014 he finished inside. According to most of the ovulation calendars i was fertile during those days and i probably ovulated like on  4/25/14. I have a 31 day cycle so im not sure. These past few days my back hurts as if i was on the first days of my period and my breast are sore and on my right breast i just started feeling a tingly stron sensation. I have been thinking about this alot maybe its in my head idk. Is it possible for me to feel symptoms right now?