Close to Peak

So my control line usually never gets darker than this. The test says to use FMU or hold it for 4 hrs with minimal drinking. This test was from this morning and the opk reader on this app puts this test as a high result. (So does the digital reader)

Last cycle I ovulated on CD17, I am now on CD15 today does this test look high? Is the control line sometimes this light colored? It was really dark last month when I had gotten my peak. I am on antibiotics for a UTI but the doctor says they shouldn’t mess with my testing. Any input would be appreciated!