Waiting on period

Hi ladies

So I really need some advise.

Since d&c back in March periods have taken ages to come. Cycle could be even 40-48 days.

We were hoping to have next fet before Christmas. We had our pre treatment consultation last week and I was to let them know when period arrived to schedule prostap injection.

So period arrived ever so slightly on Monday evening with few clots sorry for tmi. But nothing since. I rang the clinic Tuesday thinking period was here and got date to attend for prostap but I have had no bleeding since. And I would normally have 2/3 days if heavy bleed.

I worry that when I ring back today they’ll tell me to wait for proper bleed which means I may have to wait to after Christmas.

I am so so frustrated and upset, with all the disappointments now period had decided to play up on us!

Any advise would be greatly appreciated!