I sympathize. My son had strep constantly when he was young. Always on antibiotics. It would go away and three weeks later he'd have it again. He'd get the stomach ache that went with it and at one point I thought he was faking to avoid school, but then we'd get the test and sure enough, it was strep again. He did outgrow it eventually and only got it once since then -- he was co-leading a three week St. George Trek at Philmont and had to go off-trail for a couple of days while the meds kicked in.