Trying to conceive our second baby without a HSG

It took my husband and I 4 years to conceive our son (he is now 2) After I had a hsg we conceived a couple days after the procedure. The doctor told me one of my tubes was blocked, but when I asked them if I would need another hsg when we tried to conveive again, they told me that it would be easier the second time. My question is has anyone had a similar experience?