Nerve pain in Lower back / tailbone area , could I be pregnant

Hi all ,

My husband and I have been trying for our second baby for a few months now . I currently have an 15 month old boy .

I'm about 5 days always from my scheduled period . Today I've had the worst nerve pain on my lower back . It's the worst pain ever .

I'm always tired but that's probably because I have a toddler that very attached to me these days .

Anyway just curious if anyone experiences low back pain this early on and found out they were pregnant ?

I'm just curious and hopeful