Is this the front of the thigh?
Or just the inside?
Does this go past the knee? Or involve the lower back?
How long has this been happening?
IT FEELS LIKE A BRUISE ON THE INSIDE BUT YES THERE IS PAIN ON THE FRONT OF THE THIGH AREA ALSO. IT DOESN'T INVOLVE THE BACK AND IT HAS BEEN HURTING ALL DAY. I AM WORRIED ABOUT A BLOOD CLOT (ALTHOUGH I HAVE NEVER HAD ONE) SO STARTED LOOKING ON THE INTERNET TO SEE IF I COULD FIGURE OUT HOW COME IT IS HURTING SO MUCH.
Do you have swelling, or redness in that area?
Do you have weakness (e.g. trouble walking)?
The fact it is not swollen and not red, and seems to be sharp in that specific area makes it less likely to be a clot.
And more likely to be irritation of a specific nerve.
That area of skin that is ultrasensitive is suffering from "hyperesthesias" or "allodynia" - where normal sensations seem to cause it pain. This usually is due to irritation to the nerve.
Now what is actually irritating the nerve is a harder question to answer, and it requires further evaluation, starting with a neurologic exam and imaging or further testing if necessary. However, because most nerve irritations/inflammations improve over a few days to weeks, most of these cases get better on their own.
Such pains can come from lumbar nerve root irritation ("pinched nerve" in the back), sacroiliac joint irritation, muscle strains (quad, sartorius), or actual issues with the femur bone. Of course, your symptoms make it sound nerve related.
To tell you the truth -- whatever makes it feel better.
If it is nerve irritation, it will just take time to get better, and whatever you can do to make it feel better is what you should do.
Of course, should this considerably worsen, or not improve after several weeks, seeing your doctor is best, XXXXX XXXXX a doctor's examination of the leg is needed to come up with an accurate diagnosis.