Weight gain or pregnancy

I went from 125 to 120 to 127 and I feel as thought in gaining more weight. I keep feeling little thumps but idk if it's just gas bubbles or actual kicks. My stomach is also a lot more round but it also looks like I've been eating good. Any advice? Going to take a test soon to really see but I feel as though my levels are too low to be detected. Its happened before so I dont really know if pregnancy test help me and I cant do a blood test until I get at least 2 positive stick tests. Someone help. Any home test?? DIY tests??