Front thigh nerve pain. Femoral nerve?

Hello Sir/Ma'am, I have a L5-S1 disc bulge due to which I get back pain when I sit for long hours like 2/3 hours but the biggest problem I am facing right now is that I have Front Thigh Nerve pain(both legs) little bit more in my right leg than left. Doctors say that my front thigh nerve pain is due to my disc bulge, I don't know whether it is due to sciatica or femoral nerve or peripheral neuropathy. Couple of months back I had severe thigh nerve pain than I did NCV and EMG test and I was diagnosed with peripheral neuropathy than again after sometime I did both tests again and it said that there is no detection of peripheral neuropathy. My symptoms are when I stand, sit or walk for a long time say 40/50 minutes I get irritation in my front thigh, I get little bit of thigh nerve pain, sometimes I get weird sensations like I can feel my thigh nerves while walking and also my thigh muscles feel loose when I walk. My question is- Is this sciatica, peripheral neuropathy or femoral nerve?