Need help!!

Hey i need help please... Not sure what to think but i have taken a couple of test and not sure if i should get excited! I first found out i was pregnant in may and then towards the end of june had a miscarriage around 14 weeks unexpected but took three months for my hormones to return to normal. Around beginning of September my blood work was negative. I had aunt flo that month and then got aunt flo a week early which is not normal for me so i decided to test... 

This is sunday 

This is yesterday 

This morning 

And this afternoon 

And the clear blue was negative so can someone please help me understand this