Very strange periods.

Since I have been trying for baby no2 my periods have went weird and a bit messed up! July my period came two days late very very heavy. Then August came 4days early very light in colour pale pink and watery and never got heavy (convinced it was implantation as it was so different) wasn't my normal period. Today I started again two days late according to ovia and a day early to glows predictions, so In between I started earlier this morning (uk) and yet again not my normal period very pale in colour and just like spotting or a bit heavy but not enough to change a pad! It's all very weird any ideas?