hej! Doesnt sound as if youv'e done anything too bad - its bound to hurt a bit when youve had it forced artificially, youve not so long ago had surgery. Beleive me, if you had a tendon or muscle tear youd know it, and the pain wouldnt have gone over so quickly again, so dont worry too much. Of course, if it starts to hurt really a lot, then you need to go to the doc.
Greetings Beda