Somatization. Is this help me, please?

It has been 4 months since I suffered from stomach flu I suffered from immense stomach ache, vomiting , diarrhoea , weakness , dehydration and a little headache for a week After 18 days of it. , I got vomiting due to overeating I realized my mistakes but the problem is not that Even after 4 months, my mind is overestimating things Whenever I eat anything , I feel that I have eaten more and low quality food I am afraid of getting sick again Earlier after playing I washed my hands once but now my mind forces me to wash it atleast 4 times with soap While removing a t-shirt I get afraid bcoz my mind thinks that the t-shirt is dirty and infections will come near my mouth and make me sick While exiting a washroom I feel that I am infected (after touching the handles and faucets) so I go back and wash my hands with soap 5 times Altogether in a day my mind forces me to wash hands with soap for 15 times I am only 15 and my condition is this Help me, please