D.B.
I never had any luck with kegels. If you're doing them while peeing but unable to stop the stream of urine, then the muscles are way weaker than you had imagined. Pregnancy isn't helping at all, of course.
The specialist you would see would be a urologist. There are other therapies available, including medication (Detrol and similar ones are common, although they cause a lot of mouth dryness, which makes you drink more, which makes you pee more….) and surgery. Neither of those would be great ideas during pregnancy, probably. I assume you are using bladder control pads in the short term.
There are also muscle strengthening supplements that are safe for everyone, including pregnant women, although of course you would want to show those labels to the provider. I found that getting rid of all my allergy symptoms made a huge difference in frequency of the problem.
Good luck!