male 185LBs. 29, 6,1"

on my second cycle of test enthanthate and winstrol.

always seems to be fine with the test. but every time I do a winstrol injection my heartrate seems to go into overdrive. I get weird muscle or nerve twitches throughout the day of my injection and in the night, as I'm dozing off I'll get the same twiches which seem more intense therein shocking me awake. I gotta say I'm a little sick of waking up thinking I'm having a heart attack or something.

i had relatively the same symptoms last cycle, had my blood pressure checked and it all seemed good. I also do not seem to have these symptoms on days when I'm not doing winstrol injection. Is this all just nerves?