Hi I Just Wanted To Get Some Answers. I Had

Hi I just wanted to get some answers. I had a miscarriage a few months ago. I started taking my birth control sometime after . I'm really bad at taking pills especially them being that you have to take them the same time everyday . I had my period October 26th. I remember that I had missed some days I think before & after. But I'd take two the next day. On October 30th I had started a new pack & took it that day . I lost my pack somehow & didn't take it on Monday October 31st. The next day , Tuesday I had early morning sex with my boyfriend & he finished inside of me twice . I was planned to go on a vacation Thursday that week. I got a new pack that day but I forgot to pack it with me. I left on November 3rd on November 7th or 8th I noticed that I was starting to cramp . I thought maybe it's because I wasn't taking my pills. A week and a half later I'm still getting cramps . I have noticed that I can breathe at times idk if it's because I'm in a different environment or what. November 15th & 16th my nipples were hurting so bad like never before. But again I still think it's because of the pills or maybe I have different signs of me starting my period because of my miscarriage . I've never experienced them hurting like that before . Also with them hurting they stayed erected which has never happened . I do get headaches but it can be because of me sleeping to much or because I go to bed late. Is it possible that I could have became pregnant ? If so , when is it a good time to test ? If not, why do you think all this is happening ?