The quantity of cervical mucous and its nature is determined by estrogen
content in body at different times of the menstrual cycle. .
If you are on some medicine like clomiphene
it decreases cervical mucous. ...and herbal medications or certain ayurvedic preparation come in pharmacy like barkeitt which increase this mucous quantity. ...but ovulation cant be accurately determined by this.....though painful intercourse is of concern ..you may use lubricants or even estrogen creams vaginally during periods of extreme dryness.