I got some antibitocs called ampicilin 500mg and read up on them it said to take twice a day for throat issues, the throat issue is gone except for congestion issues are still happening, what do i do?

Antihistamine : Your throat issues may have been from post nasal drip, whereby the congestion in your nose drips down your throat and makes it sore and inflamed. Take an antihistamine to help with your nose. Saline mist sprays also help dry you out.

Have a real eval: Self diagnosis and treatment often leads to treatment failure. You might luck out and get it right, but most throat infections are viral and need no abx, and residual upper airway swelling for both can last a week or two. Nasal decongestant sprays can provide brief help while otc oral decongestants can help over a longer term.