The biggest issue I have with help like this is I have no idea what your life style has been, has been the last few weeks, meals macro break down, health history, all symptems other than the ones that get posted.
For liability reasons its best to just post see a Doc.
In reality before you start a training rutien you should have anyways.
If you did and your ok then look at your pre w/o meal. If its too high in fat it will beet the crap out of your cardeo vascular system. Some fat is ok and can even be good but too much you will swet like a pig and loose breath quickly.