Really need some advice.

Laura • Wed, Feb 10

So today I am 12 DPO and due AF on Fri/Sat. On Sunday I had light pink spotting a couple of times. Today I have woken up with light cramps and brown spotting. Also had a BFN. Feeling really down in case AF is on her way. Anyone able to give me any hope? Anyone experienced this and then got a BFP