H pylori with antral gastritis. Sure.

Sir I had endoscopy done which reflected antral gastritis(Congetion in antrum) with h pylori infection.I ve been on ppi 40 mg for 2 months now and strong antibiotics for the first week(2 times a day). Some improvement has happened but its taking too much time to recover.I ve totally stopped eating oiled and fried food and i do exercise for almost 1 hrs everyday for two months. I am taking all precautions for it to recover.Eating slight heavy or high protein/fat food bothers me so i stopped doing so. But now due to the ppi use for very long time i am having slight head ache and vertigo type feeling. Is it normal that gastritis takes a very long time to recover or it is that i am not getting the proper treatment for it as required. Please help sir i am just 16 yrs old and it is ruining my studies and quality of life for sure .