Almost fainted and started sweating excessively?:/

It may have had something to do with me exercising but I'm not sure. I had just done some pulls and push up routine and felt spent after that. I then went to have dinner feeling exhausted. I had one spoon of my food then my stomach began to turn.

I sat there for 2 minutes feeling dizzy and about to pass out and I went to the sink and was about to throw up but nothing came out. I then felt really lighted headed and started to sweat really bad and I had to sit on the floor until everything cleared. I was OK 5 minutes later. I was scared as sh*t. It wasn't the food because my parents were eating at the same time and they were fine. Could the exercise and then eating straight away do that? :/

Almost fainted and started sweating excessively?:/
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