My boyfriend and I had intercourse last Oct. 20 and my last period was last Dec. 1 until Dec. 6. That 5-day menstrual flow is not my regular thing since I usually have mine in 30 days period every 3 months. Yes. I only got my period every 3 months with a 30 day duration. When we had our intercourse, we usually do not use any method other than withdrawal. I think, 2 weeks after we did it, I felt dizzy thrice a week but not the usual dizziness where one lose consciousness, it's just like the feeling of my blood went down to my feet. Then, nov. 6 I had a sore breasts and my nipples get dark when the environment is cold. I also got severe gas problems where I really burp every 7 seconds or less though, I really have this one everyday but it's just since nov. 6 when it got worse. There are also brown discharge from Nov. 6 until Nov. 30. Then on December 1, I had my period. It's my normal period on it's first 3 days because I usually have a heavy one. But suddenly, it stopped on the 5th day. And now, I notice my areolas getting darker when the environment is cold but no pain. I also look pale most often from my hands to my lips to my eyes. And my nails sometimes turned into purplish. Another thing, I can also feel full in my lower abdomen just after my period and I don't know but my abdomen really looks bulgy for me with its focus on the center. Could I be pregnant given all those scenarios?