Question about Fallopian tubes

Michelle TTC baby #1

So I had an hsg dye test done one month ago. I went for a check-up today and we did a transvaginal ultrasound and now the tube that showed blocked on the ultrasound is no longer showing up on the ultrasound. Now my right side looks the way that the left one did last month. Does anyone please have answers for the sand or is going through the same thing?