Sounds like you have https://www.whattoexpect.com/pregnancy/symptoms-and-solutions/symphysis-pubis-dysfunction I have it too and I’m 31 weeks. The pregnancy support belt helps. But if you are really feeling pain or a lot of discomfort best to check with doc.
When is your next gynae appt? Are you wearing a pregnancy band? Maybe your baby is already ‘dropping’ already. If you can’t tolerate the pain, seeing your gynae will be the best idea so get leave from work to rest!