Struggling to get a diagonosis

Hi,

I'm a 30 year old male, and I'm a bit scared about my own health, so I thought I'd make this post. For about 5 months, I have had a distinct burning/slight tingling that runs down my right leg. My inner thigh often burns and feels warm, while the rest of my leg is characterized by a slight tingling that varies in degree, and sometimes small spasms. There is a distinct spot in the center of the tibia, in which the symptoms seem to radiate from. There is no noticeable pain, but sometimes it feels like this localized region is "throbbing", if that makes sense. I feel this on the very front of my tibia.

There are no movement restrictions, I've been eating well and feel okay, I can walk and run normally, weight is normal (if anything, I think I've gained a little bit of weight lately). There is mostly next to no back pain, though sometimes I do feel just a little bit the right side, and in one occasion I had a few spams around the area. I think it's got midly worse over time? Can't really tell, but sometimes I do get weeks in which I don't feel much at all, and then sometimes it's really back to bother me.

I visited the doctor a couple months back, which he asked me for two spine MRIs (dorsal spine and lumbar), and an electroneuromyography. All these exams turned out to nothing, though the doctor raised concerns with the electroneuromyography exam (something about needs to be redone, or something). One thing the doctor did mention is that there is maybe some slight swelling of my affected leg (picture attached). This is more noticeable when I put on this pair of jeans that is slightly tight around the calves, and the right side definitely feels tighter. Doesn't look like edema, though. My right foot definitely doesn't feel bloated and the there's no apparent excess fluid trapped in it.

I've had random episodes of having leg crambs in my right leg for many years now, if I moved it a little on the wrong way sometimes I'd get a cramp. But again, not sure if this is related.

Since this is lasting for long enough, and it's had some impact on my quality of life, at this point I'm concerned it might be something more serious. My knowledge of medicine is very limited, but it's easy to get freaked out when I fill in a symptom checker and it gives me ostheosarcoma. The doctor I was seeing did mention there was not much point in imaging the right leg itself, as it's most likely something nerve-related.

I wonder if people could point me in a few directions, e.g. the type of doctor I could be seeking out from now on, what my case sounds like, perhaps a few at-home relief strategies I could try out. I will be more active in seeking care from now on.

Any help is appreciated. Thanks!