I could have said a lot more in fact I and many other people have already done so many times recently. I don't even count myself as a vet, one of the real vets would have torn you a new arsehole. Its nothing personal, you just get sick of answering the same question all the time.
You and any other newbies should have researched PIP or whatever topic before posting a question. Even if you didn't do a search, you could have scrolled down the pharma page and read at least one listing about PIP that would have pointed you in the right direction.
If you haven't already found out, your high mg, 500mg/ml test has Ethyl Oleate as a solvent. This stuff can cause your symptoms, if it doesn't agree with you. Some people don't have any problems with it. It is pretty darn painful, you can either tough it out through the rest of your cycle, or ditch the 500mg/ml stuff and get some more 250mg test from your supplier. Test 250mg/ml doesn't need EO to keep it in solution, but some labs put it in anyway, tell your supplier you want some without EO.