What to expect!!?

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Ok I go in Monday for a hsg. What should I expect?? & does it get you pregnant??.the reason I'm going is because ive been TTC for years without any success. I'm trying to make sure my tubes are not blocked. I'm also having a lot of tests donem so hopefully I will have me a baby soon!!!.my other obgyn have put me on clomid. But I really don't want to take it because I'm hoping this hsg is a success. I'm just glad that I'm seeking help and can move forward with my life. Just whisper a lil prayer for me everyone. TIA.