Could I be pregnant?

I never took bcp before so I started on loestrin 24, I stopped the pill half way because was giving side effects I didnt like it at all so I stopped the pill on jan 17 and I got a light bleeding next day I had unprotected sex on the 22nd after that I stopped the bleeding...few days later I started to notice that my breast are very swollen or bigger I never seen it like this before I feel bloaded..and I pee frequently too but I also love drinking water...i dont know if im gettin again my period or am I pregnant? was the bleeding I got after I stopped bcp was that my period ? it was can I get my period again? or am I pregnant my breast are sore and very swollen I see the blue veins around me breast..im eating a lot..i feel like im pregnant...im very confuse can someone help me with this confusion?

I think that the best thing to do here is go to a doctor or if you are undergae then go to your school nurse or examinations officer if these symptoms carry on. xx