Sciatica Getting Worse OR Cauda Equina Syndrome?

I start from the beginning of my back pain history,In 2009 after a training in a gym i started to feel a sharp pain in my back, following months they pain was growing that much that I could not work out anymore. After several months I had the pain in back but also numbness in my mine buttocks after some checks that the doctors made and pain killers which didn't help,finally they have sent me to CT, which showed that I had a slightly bulged disc l1-s5,the doctors though didn't pay much attention to that result,saying that almost 60 % percent of population would have the same result if they would have checked,after months of Physical Therapy my pain was relieved ,though I didn't go back to Gym.

A year and the half after that I was in pain again and then Sciatica sensation pain started to appear like the needles and pins in my buttock,I was feeling that my legs are weak, slightly tingling on my testicles. I've panicked and went immediately to at least 3 different orthopedics who didn't help much,and neurologist who sent me to MRI and EMG both of them showed that my spine contrary to CT is fine. So he prescribed me Pregabalin which is helped and reduced my pain I aslo started visiting Yoga instructor and half a year later a gym. A year later I've started to go to gym again trying to make mine core stronger which always been very very weak it helped I guess because they were no signs of which doctors call Sciatica. In 2013 I've got into squats and deadlifts and though the pain in back and very rarely sciatica sensations above were appearing i've continued to train, the problem was also what sometimes I was blaming my self for the pain. I had and still have since 2013 a very tight schedule (studying and working) so in average i have 4 hours to sleep. in 2014 there were some increasing in my pain again, I visited some other orthopedist who told me that I'm fine and I visited Neurologist again which has sent me to MRI and EMG again,and AGAIN they both were perfectly fine! So i've continued to train.

My last half a year was very stressful so I didn't work out in gym as much as in the past two years, but when I got back my back started to hurt again also I was feeling numbness in my toes sometimes and tingling in my groin and testicles.

Last month, there were 3 days with pain which started from my back and went through my legs which I have never felt before, It was very strong pain in hips and back. A week after that pain I've started to feel needles and pins sensation in my legs, tingling when I walk on the street with jeans in my right leg (only when I walk outside), some days after that  i've started feeling tingling in the area of my testicles and groin which get worse when I sit and stand,never I have before such a strange and annoying feeling in that region.

Though the pain in my back almost disappeared the strange sensation in my testicles is only getting worse. For last three weeks Im feeling strange tingling in the right side of my stomach (or the feeling like something moving there inside). Also when i'm with woman I feel like I've start to ejaculate early . It's not a complete ejaculation though , only when I get arose a little bit sexually I feel like something coming out of my penis and when i was checking it,that It were a drops of sperm (although I don't have yet any other sexual problems or loss of feelings). Also they were couple of times when during the end of urinating, suddenly i was ejaculating (the sperm was coming out right after i've finished urinating), in addition I feel a weird "penis movements" sensations (sorry but that is the only way I can explain what I feel), In addition to all of that I feel sometimes weakness in my left leg or kind numbness for a couple of seconds (though i don't have any pain running or lifting my leg up or whatever).

In addition,to all of this i'm feeling like my right leg is getting heavy (or numb) and there is even one time when muscle twitches appeared in the left leg.

I really wanted to go to the Doctor, but the problem that until january im studying abroad and any visiting the doctor with that kind of problems would cost me a lot of many because my insurance doesn't cover pre condition situations and it seems like one.(though I didn't have any of these feelings before and MRI have NEVER DIAGNOSED ANYTHING) .

So I really puzzled and I don't know what to do,I have no idea why I have all these strange sensations (though almost not having any pain in a back, why MRI never showed anything and I didn't find anywhere on the web if there is any connection between strange partly ejucaltion and bulged or herinated disc).