Blood clot???? 23 weeks pregnant

April

OK so I have a lump kind of a hard section in my calf it’s a little sore I did not have a cramp I mentioned it to my doctor about a month ago she did an alter sound for a blood clot and it came out negative but yet it’s still there my leg is a little swollen and I noticed that my leg is a little colder than the other leg should I have her do another test for blood clot?