Am I out?

On Sunday morning a had a very faint line on a first response. 
Sunday night there was a string of blood in watery cm.
Yesterday morning when I went to the toilet there was brown blood on toilet paper, only a small amount.
All day there was nothing more. Then when I got home there was a medium amount of pink blood. Followed by strong period cramps. All night I was going to the bathroom as it felt like I should be bleeding lots from the strength of the cramps and sometimes there was a small amount and others nothing.
Negative pregnancy test this morning and am 14dpo. Does this sound like strong inplantation or am I out this month?
I'm a lot more upset than I thought. I think it was that faint positive giving me hope. 😢