Ouchiee mamma.. If you took 750 mgs of sus then its probally the Prop that causes swelling & pain.as well as the sheer volume of oil injected . the same thing happens to me.I dont shoot 750 mgs at one time. everyone tells me that they have the same problem with prop. the bottom line is prop hurts but its effective. try just taking 250 mgs at one time.(eod). rotate injection sites & take every other day & you should be just fine.