Need some help out

Sabrina

My stomach is starting to fill hard when I touch it. What going on? Am I pregnant? Or what is this? I do think I’ve ever felt anything like this. I’m not on any birth control. My Premom app says I’m 8dpo but the glow app says I’m 7days late for my period. My last period was April 12th. I have take pregnancy’s test and still negative. I am not sure what to think. What do you think?