Hsg test and Clomid experiences please!

Makayla
Hello(: so after a bunch of trips to the hospital lab, lots of tests, and at least 100 negative ovulation tests, my Obgyn and I have come to the conclusion that I don't ovulate on my own with my long periods and/or short cycles.
I'm almost 21 and just starting out with this process so I'm just looking for some experiences! I start Clomid in about 2 weeks followed closely by an Hsg test! 
Any advice you can give is welcomed!