About 5-6 years ago, i contracted chlamydia twice, several months apart. but once symptom showed, i immediately went to the doctor and cleared it out. ive been careful since. can this caused blockage to my fallopian tubes?

Overwhelming possibility is that it will not

Chlamydia infections cause minimal to no symptoms and the risk would correlate to how long you had it before it was first detected. If you had negative tests prior to your first positive test then the risk of tubal damage is very low. Once treated you have no continuing risk, but if you now have tubal blockage the Chlamydia is a likely explanation