Why am I having another LH surge 8 days later?

Brandy

Very Confused **HELP

I had what I thought was a 24 hour surge last week (photo with 4 tests). Today is 8 days later and my LH tests are more positive than ever also tonight I took a pregnancy test its negative (2nd photo) but I think from that first surge I would only be 8 dpo. Anyone else have 2 surges?