Yeah it could be that he dropped or he is starting too. Remember your baby is bigger now as well so it's normal to feel pressure. When I was around 35-36 weeks it would even hurt to walk, specifically when I was sitting down for a long time and then stood up
I been feeling the same pain since I was about 31 weeks , I think it's just the baby moving down. It's like a pain dat made it hard for me to even walk at times. I honestly forgotten to ask my doctor about it cuz it always goes away.
I have the same problem and I'm just a couple weeks ahead of you. I've read up on what it could be and more than likely it is your baby moving head down to settle into your pelvic area. My doctors checked me at 36 weeks so you can probably ask your doctor next check up. :)