Period after HSG?

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Hi ladies!

My husband I have been TTC for a year now so my doc performed a HSG to make sure everything was flowing as needed. Luckily everything looked great and I “passed.” We’re going to try Clomid next few cycles, but meanwhile I’m waiting on my period... it’s due tomorrow but

CD9 - HSG

CD15 - ovulation and BD

CD26 - very light pink when wiping

CD27 - negative pregnancy test

Anyone else had their period be delayed after HSG? I’m trying to remind myself that I’m probably not pregnant as we only did the deed once this cycle and it’s apparently unlikely when you’ve had HSG that cycle.