I feel like it's falling out!!!!!😳

La
Omg please someone help me. I have never experienced this with my other 2 pregnancies but I am 28+3 and feel like my vijayjay is about to fall out or off. 
I had my 28 week appointment today and the doctor said that the baby is measuring fine. So my fundal height is 28 1/2 but I really feel like my vagina can't take any more pressure. Is this normal? Anyone else feeling this? Please help me!  
 I don't even like walking because it's so uncomfortable!Â