cramps, tingles , bloated and pissed period

I have had cramp like small feelings for 5 days now, there not normal cramps it's near my pelvic areas and comes and goes and most on my left side
I also feel tingles below the belly button sometimes 
I was very bloated yesterday and was very gasy and gave me pain
I have missed my period by 4 days
On Friday I did a pregnancy test and it didn't seem to work properly and when I looked at it after 5 mins it had 2 very faint lines on both signs
I drank lots of water and didn't another one about half hour after and it showed negative
Then in the morning after I did a clear blue and it said not pregnant..
Could I be pregnant? 
Help