Happened to Anyone?

need advice, right I had a "period" in august lasting 2 days wasn't normal at all.. but I carried on then Thia month on the 4th I had a "period" wasn't as heavy but was painful I was convinced it was it and then like 5 days after I had really bad headaches, and dizzy light headed and now it's 10 days after I started and my tummy is so swollen and bloated I feel different in myself still having headaches and I'm so tired and thirsty all the time, I dunno what to say I'm gonna take a test but is it possible to of conceived in the August it was implantation ?