Watery cm

So I should get my period in 6 days and I'm having watery cm yesterday it was very heavy and I had to change my underwear a few time from being uncomfortable. I believe I have already ovulated this month (about a week and half ago) could I have been mistaken or be ovulating agian? Or does anyone get watery cm before their af visit? My husband and I are ttc should we get busy tonight? We have been having unprotected sex regularly sense ttc... Thanks for any advise!