Has anyone had this symptom and got BFP?

Has anyone gotten cramps 5dpo and ended up getting a bfp? From 5dpo to 10dpo I’ve had light cramps and a backache? The cramps and backache started on my left side of my pelvis. Then they started to feel like light period cramps. And yesterday it felt stronger like I was going to start my period soon. Has anyone got that and then got a BFP? I’m about 12dpo now