question ? help ? could I be ?

So like 5 days ago I took a pregnancy test bcuz I was having head aches for a while already and I still do so I went to the store and bought a pregnancy test and I took it but it came out negative . So yesterday when I went to the restroom I had a little bit of blood but I just had my period like 2 weeks ago I don't get my period again till the 26 so I'm not close to getting my period yet . Also I have been feeling this uncomfortable feeling at the bottom of my stomach close to my private parts where my waist is kinda like cramping but there not really that bad so I was thinking if I could be pregnant since when I was pregnant with my first baby this is how I started and I had no idea I was pregnant till I got no period at all then that's when I took a test and it came out positive but I was already a month with a week pregnant so my question is could I be pregnant or is it something else ? Should I take another test since I took one 5 days ago but it came out negative ? Also today I felt like this little move ment like my stomach twiched at the bottom of my stomach on my left side this is the first time I felt this and what I felt was like what I felt when I was pregnant with my first baby so I think I could be pregnant but since it came out negative idk what else could I think I have 🙄 help has this happen to you before ?