Tramadol Hydrochloride and few days

I have had numerous side effects with tramadol (nausea, heart skipping beats, restless legs at night) but I was too desperate and needed something so I just started taking 2 half pills a day (total of 50 mg). Well, now I've quit after about 2 years because I have sudden onset swelling and tendinitis in both of my achilles tendons. There was absolutely no trauma involved and tramadol was my only medication. After doing research online, I found that this is a rare side effect to some other medications but it hasn't been mentioned for tramadol. I truly believe this is a side effect that just hasn't been reported yet. Also, it can lead to both tendons rupturing. I just hope I stopped the medication in time so that it doesn't lead to that. It's only been a few days and I have a lot of pain and difficulty with stairs. I think this will take a while to get over -- like all orthopedic related problems.

Horrible side effects. Had sinus infection so was also taking Avelox, took 2 tramadol for pain for 3 bulging discs and face pain associated with sinus infection. Pills were spaced out over 7 hours. Then BAM I wake up about 3:30 a.m. itching all over and then progress to vertigo and nausea. The Avelox brought its own set of symptom, which I didn't realize for a few days after the Tramadol was out of my system. The whole experience sent me to the urgent care, then by ambulance to hospital. I HATE TAKING MEDS.