Woke up yesterday morning and stood up fine until I took that first step and experienced lower back pain. Wouldn't be too unusual except it felt more "nervy" than muscle pain. I continued my morning routine only feeling slight pain with certain movement, though not enough to keep me from going to work. Through out the day I felt weakness on my left leg but all bearable. In the evening and this morning I felt more specific pain on the pelvic area in the back and when pressed that area if felt very specific to the joint.
I did something dangerous and Googled a few things and from what is sounds like is Sacroiliac (SI) Joint pain. The pain symptoms were consistent, including pain through the leg and weakness which is what I have been experiencing. And based on what I read it can be due to walking, or overuse (plus other things that matched my situation). This is affecting my right leg that does most of the "work".
I will see a doctor for a proper diagnosis but thought I'd come here and see if anyone has experienced or been diagnosed with this problem. I'll start with PCP but not sure who I need a referral to - neurosurgeon (though there does not seem to be a need for surgery) or a pain medicine doctor in combination with PT?