Cm during ovulation

So everymonth in what should be my fertal window i have thick stretchy clearish mucus with like old blood ting in it like to the point i have glops of it coming out on my pantys its super sticky and stretchy .is this normal ? Ive had three babys before with my ex and remember this but not every month and my new husband and ibhave been trying for over a year with no luck im woundering if sonethings wrong with me or if this is normal