Help!

I’ve been TTC for 13 months. Had HyCoSy on day 7 of this cycle and blood tests to track ovulation so ovulated on day 18 (baby dance on the two days leading up to 18th day)

My cycle is usually 33-35 days and regular but I just stared to bleed on day 29!!!!

I think it’s too heavy for implantation bleeding but I’m only 11 days PO and usually always get my period around day 34. Other than a two week late period after a burst cyst from right ovary in April I’ve had very regular periods.. (the doctor said in the HyCoSy that I’d ovulate from left side and there was no cysts etc..

I’m scared this could be bad!! 😭

What are your thoughts, had anyone experienced a random early period