I would go to the Dr. As you already well know, pregnancy does a number on your body and this was your 2nd pregnancy.
I've been visiting my Plano Orthopedic over 4 months trying to resolve some lower back, foot pain. To my surprise, after a test was run, I have 1 leg slightly shorter than the other. My Dr. told me that someone like me, petite, often has issues post pregnancy because our bones move around and basically, my back and hips were out of line with the rest of my body. My "baby" is 14 yrs old and I never connected the dots as far as my alignment being out oa whack due to giving birth.
After getting some special orthotics for my shoes, I am AMAZED at the difference in my feet. Also, he sent to to Physical Therapy for a few visits and she has helped me with some exercises that stregthen the my core muscles and since I have done this, my lower back no longer hurts.
As far as Physical Therapy, I went 1 time, my therapist thoroughly went over each exercise and how to do it. I do the exercises at home and it feels GOOD to do them. Some people, maybe without much discipline or time management, go to the PT center regularly to have monitored care.
I go to the Dr.s at Plano Orthopedic and we've seen all of them I believe. They have specialists for each area. GREATEST Dr.s. A lot of people want to move right to surgery but they work with you to avoid surgery unless it is absolutely necessary.
www.posmc.com