Do short periods indicate a problem?

So backstory, my cycles have always been really regular, 28 days on the dot and AF lasted 4-5 days. However, last summer I ended up having an ectopic pregnancy that implanted into the lower half of my uterus just below my c-section scar. I thankfully was able to miscarry it naturally without a d&c; but I bled for 7 weeks before my hcg got down to zero. That was in October. Now, my cycles are still pretty regular at 26-28 days (usually 26), but my periods are sooooo light. This cycle I only really bled for one day then super light spotting for 2 days. We are about to start ttc and I'm just worried that there's going to be a problem. Has anyone had really light periods and ended up having fertility problems?