I think what you're experiencing is pubic bone pain cos I am feeling the same. Immense pressure on your pelvic. It's due to the weight of your uterus. Your gynae can't do anything either. Bed rest and do Kegel exercise. It helps to lessen the pain
I experiencing e same at 30 weeks, gynae said is pubic/pelvic dysfunction and told me to see physiotherapist as I tried to do kegel exercise..
Pls consult your gynae if you are not able to walk properly. Experienced the same thing at 32weeks and went to doc. She gave meds.
Best to consult your gynaecologist asap take care!