Prego symptoms?

Meghan • My husband and I have been married for over a year now, and we are so looking forward to starting our family!
So I'm about 5-7 dpo. About two days ago my boobs began to feel very sore and my back is absolutely KILLING me. Also, today I've had some sharp pains in my lower abdomen. I know it's early, and if I am pregnant it would just be in the implantation stage, but I'm wondering if any of you ladies ever experienced these early symptoms before getting your BFP. I know everyone's different so I'm taking everything in as info and not as false hope. I'll be able to test next week around Thursday or Friday. Thanks in advance for the input!! Good luck and baby dust to all!