Am I imagining things or???

In having so many mixed roller coaster emotions with TTC. After "trying" within the next few days I literally felt bloated and sore and the inability to "suck it in" even if I tried. I started testing early (because I'm a crazy lady who likes to loose my mind over pregnancy tests apparently) anyways. I thought I saw a faint line a few days ago, I set the pregnant test aside and thought I'd look at it later and forgot, however tonight I found it and there is very obviously a second line. Crazy right? Especially since that's like 5 DPO at the time. I've tested since and gotten all negatives which is fine because it's still really early, my period isn't even due until this Thursday/Friday. But why the positive and not any hint of a line since? Also I need to back track a little and let you know that Tuesday of this week I believe I felt direct implantation pains. It hurt to walk, move, get up, I had direct pain on my right side, I felt huge and bloated and uncomfortable the whole day and then I woke up and it's like the pain was never there. I've heard with implantation it doesn't last long which would make sense and my symptoms have been VERY intense to where it's not like I can say I'm just willing it in my head. ANYWAYS. I need all of your thoughts and opinions!! These negative tests have got me rally down even though it's still pretty early.