What Causes Irritation And Burning Sensation After Intercourse?

Hi, iam nisha. 1am 24 years old. iam trying to conceive for 2 years but stil we r not getting. last Nov 2011 i did HSG..It was positive,I took all the test, everything was positive only.. and my husbands too. his counting is 60. i have a problem when first time of intercourse after periods thats is i feel like irritation and some burning.. doctors advised me to take Fertomid 50 and Duphaston. pls suggest any medicine to stop that irritation.