Knee pain just under the knee cap

Hello

First of all thank you all for the support you are offering it's really magnificent

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My problem started on the 7th of January while I was running

I felt a pain in my right knee just under the knee cap when I land on my right foot

I stopped running for couple of days and didn't feel any pain in those rest days however when I tried to run again in the third day the pain was more pronounced and It was gradually building the further I went in my run .

I stopped running for 2 weeks but during this period of time descending the stairs gave me a feeling of slight discomfort other than that daily activities felt just fine.

After a short period of time from those 2 weeks I went for a run (I know that I shouldn't have done that) but this time around the 9th km I started feeling sharp pains in my knee I stopped and stretched but on my way back home it felt like my knee was locked and I couldn't bend it at all every descending gave me sharp pain I iced it for 20 minutes and kept it elevated after sleeping and waking up that night trying to bend my knee gave me less pain I used my hands to bend it

Once I bent it I was able to bend it and straighten it again just like normal

I went to see a doctor and he saied if you are able to bend and straighten your knee normally and do daily activities normally there's no need for a MRI scan and he prescribed me diclofenac 50mg for 10 days

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I stopped running for about a month and started doing some leg exercises I could do squats,lunges,jumping without any pain and I used hot water heating pad 2-3 times a day

However when I tried to run again this month I felt the same pain gradually building the further I went in my run.

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From the begging of my injury till know there's no swelling or redness in my knee at all it looks fine

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I can't replicate the pain by touching my knee any from any angle

The only way I can replicate it is if I laid down on my stomach in bed and bent it towards me then I would feel like my whole knee hurts

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You may ask why I didn't do a MRI scan till now well that's because I live outside of my country and I don't hqave health insurance

Just doing the scan without receiving any diagnoses would cost me about 105$

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I'm 19 years old and I've never had knee injuries before

There's one last thing that I feel I should mention , my knees pop every time I bend them since I was 6 years old but without any pain or discomfort

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I'm really sorry for the prolongation but I thought that I should mention everything

and I'm really sorry if there was any mistakes ,english isn't my mother language

You need medical evaluation at this point.  Good luck!