The main thing is that you are feeling better, which is great. Nevertheless, you did mention a change in your pooing, if this persists, then I'd certainly urge you to speak to your doc. He'll know what questions to ask to rule out any nasties.
The "blockage" thing is a bit non descript. Interestingly certain foods will affect gastric stasis, the only thing I can use as an analogy, is the sink drainer when washing up. Ever noticed how cucumber, onions and tomatoes seem to get stuck there.....I reckon the same thing goes on in your tummy.
Certain other foods make the valve that stops food (and gastric acid) arriving in you throat-coffee, chocolate, booze and nicotine are common culprits.