pregnant or not pregnant??

So I had 2 periods in February the first one started on the 1st and the second time it started was on the 23rd. the last Period was super light and different than usual but still lasted a few days, but normally a pretty heavy flow and usually have the worst cramps in the world I even throw up most months but this last one was different like I didn't cramp that much at all and I've been feeling weird oknches on my right side since my period. Now it's the end of March 03/26 to be exact and I'm 4 days late according to this app. I took 2 hpt and they both came back negative but I really feel like im pregnant, I can check yes on most of the early symptoms, but then again it could be in my head because I want to be pregnant.. I've never been a mum before so I'm not sure what im suppose to feel like I just know I feel different. Anyone have the same situation?? We're you pregnant or not pregnant?