4th round of Clomid - feeling down

I’m about to enter my 4th cycle on clomid. I’ve been on a 50mg dose each cycle and ovulated each time. Each cycle I took it days 3-7 but I did switch up the times I took it to see if that made a difference.

1st : Ovulated CD 18 - 30 day cycle

2nd: Ovulated CD 14 - 27 day cycle

3rd: Ovulated CD 13 - 24 day cycle

I’m concerned because my periods have been so light - a consequence of the clomid. This last one was only for 2 days and I only needed pantyliners...