I'm in my third preganacy and I have a dull pain on one side that's there constantly is this normal also I think I have a uti what should or can I do

It's best to see your doctor about this, especially if you think you have a uti.

Sorry, there's really not much we can do over the internet.

I wish you all the best.

Call your doctor and get an appointment or ring the hospital.

There are nurses on askmehelpdesk who hopefully will be able to expand on an answer for you, but in the meantime there's no harm in making a call to the doctor.