One dotor says I have a possible hernia and one says I dont? What do I do?

See a Hernia Surgeon. As a hernia surgeon, i can tell you this happens more often than you would think. One common error is to confuse a hernia with a pulled groin muscle. Another confounding factor is that hernias can be evident some days and very subtle on others. In general, no bulge, no hernia.
Testing. Get a better answer. An ultrasound of the area of concern can confirm a hernia.
Get a General Surgeo. Get a. Insult with a general surgeon to be examined. In doubt they may order a ct scan which sometimes confirms the diagnosis.
3rd opinion. If it hurts, get another opinion.