You obviously seem to have a Chest infection, probably of bacterial etiology. For most cases (not only just strept) Amoxycillin should suffice. But the dosage should be taken as 500mg three times a day rather than twice day (if you are normal otherwise healthy individual ). The low dosage could be the reason for slow resolution.
As of now if the breathlessness is severe ( breathless at rest, trouble in sleeping) you should go to ER. If you have fever, severe tiredness, confusion and rapid breathing you should get to ER. These are dangers sings which might indicate pneumonia. In that case you will require a Chest Xray and another class of antibiotics for better coverage.
So bottom-line is :
1. Watch for any danger signs. If any signs present do not hesitate to contact ER
2. Increase the timing (to thrice daily ) in consult with your Doctor.
3. If there is no resolution in 24-48 (not complete resolution, alteast partial resolution ) you should contact your Doctor .
Hope this helps
Feel free to ask followups / clarifications.
Patient replied :
Ok I will take it three times a day.... I feel fine at rest or with minimal activity however I went out to the store a bit ago and I was definitely tired/dizzy .... Should I wait to see if the increase of medication helps or just head to the e/r?
Also to add to this I did not sleep if only but a couple spread out hours last night due to the coughing ... So that might also be why I feel tired/dizzy.
It is bit tough to judge indirectly. I would request you to use your good judgment. Anything out of the ordinary will require ER visit. From what you explained you seem to be Okay, if not completely alright. So you need not rush to the ER for now. Take rest. Avoid exposure to varying temperature. The last thing you want is converting this infection to a Pneumonia.
Hope this helps