HSG test

Hi everyone , kind of nervous .. I have my hsg test scheduled for this Tuesday . Im on cycle day 21 and ovulated on cycle

Day 15. I’m nervous Bc I might be pregnant but can’t test Bc it’s too early. Will an HSG test ruin it if I am pregnant 🤦🏽‍♀️. My husband and I have been trying for 3 years tried 6 cycles of clomid with follicle scans and blood work ended up not pregnant . We are in the process of seeing a specialist who is sending me for the HSG testing . A little nervous