Symptom spotting

I don't know if I'm over analyzing everything but I was wondering if any other woman experienced this before getting BFP I'm currently 9DPO confirmed with opk I used pre-seed for the first time my last cycle and I woke up today with mild backache and constipated TMI Sorry also I'm been extremely tired and emotional which is not like me I'm not due for AF I have 4 more days and pms usually never starts early for me any girls have these symptoms before bfp I'm not going to test until missed AF