Advice needed!

My nipples have started to leak. The liquid is either clear or cream coloured. They have never done this before even when I was pregnant with my 1st child. I suffered a miscarriage in December and have been trying to conceive again since. I think I'm about 7 days past ovulation and periods due in a week so I feel it's 2 early to be early pregnancy symptoms. Iv also been feeling nauseated with Lower Back pains and stitch like pains in my stomach. Anyone had anything like this?