Thank you for your query.
All your symptoms like burning sensation and pain during coitus, minor tear like lines over the foreskin indicates the inflammation of your foreskin. It may probably be due to yeast infection, or some other nonspecific infections or even due to irritants like soaps and antiseptic creams and washes or due to any other topical application.
You better consult your Dermatovenereologist and with his/her guidance and investigations, arrive at correct etiology and treat the same you will be perfectly alright.
If you have infective cause like yeast infection all your sex partners are to be treated adequately otherwise you may have recurrences. Genital yeast infection
needs treatment for 3-4 weeks. One week treatment will not lead to total eradication.
Treatment procedure are all simple and full cure can be assured.
Get well soon.