5 mos ago diagnosis h pylori. Tongue was painful & sore under white stuff. Never diagnosis as thrush & now have a veru sore spot on side tongue. Keeps rubbing tooth?

Candidasus. Even though you were never Dx wuth thrush mote that's what it was and it could be now. Everytime you are taking antibiotics fungal infection are likely to happen. To prevent this ypu can try yogurt or probiotics. If you di not find reliefe with this you may need a prescription to overcpme the candida albicans infection.
Tongue sores. These sores are very telling about the mouth. You have been assaulted by "Stuff". Find out what it is. DO NOT DELAY. Go to the ER/ O.Surgeon, / or hospital trained DDS/DMD. They will help a lot. Best BD.