If I do have strep. What antibiotics should I get? Penicillin right? Like amoxicillin?

See below. For a strep throat treatment is usually 10 days of penvk or amoxicillin. In penicillin allergic patients with streptococcal pharyngitis the macrolides-erythromycin, biaxin (clarithromycin) or zithromax as well as Clindamycin are effective. If the penicillin allergy was only a rash and not immediate hypersensitivity cephalosporin antibiotics are safe and effective.
That should work. Group a strep is susceptible to most antibiotics such as amoxicillin. See your physician for a prescription.