Vaginal pain 25 weeks

So I’ve been experience a lot of vaginal and pubic pressure one and off but now getting more consistent the past two weeks . I feel it when I lay down from the front of my pubic bone to my vagina . It hurts more when I walk or lift my legs or change position . This is my first baby. I’ve gained 12 pounds so far. Should I be worried ? On all my prenatal visits everything is normal . A lot of my friends haven’t experienced this so I’m starting to worry now . I think it’s pubic symphysis pain from what I’m reading but not sure .