My first thoughts are to ask you to do a Self Breast Examination. This is to check for any lumps on the breast, as breast tenderness and liquid coming out of the nipples are a sign breast cancer.
How do I check for lumps?
Start by standing in front of a mirror. Look at your breasts with your arms at your side, with your arms raised behind your head, and with your arms on your hips and your chest muscles flexed.
Next, lie down with a pillow under your left shoulder. Put your left hand behind your head and feel your left breast with the pads of the 3 middle fingers on your right hand. Start at the outer edge and work around your breast in circles, getting closer to your nipple with each circle. After you've finished checking your breast, squeeze your nipple gently and look for discharge (fluid coming out of the nipple).
Do the same thing to your right breast with a pillow under your right shoulder.
Be sure to include the area up to your collarbone and out to your armpit. You have lymph nodes in this area. Cancer can spread to lymph node tissue.
Changes to look for in your breasts
Any new lump (which may or may not be painful or tender)
Unusual thickening of your breasts
Sticky or bloody discharge from your nipples
Any changes in the skin of your nipples or breasts, such as puckering or dimpling
An unusual increase in the size of one breast
One breast unusually lower than the other
If you find anything , see a doctor, then think about pregnancy etc.
Main concern is breast cancer first.
Welcome to motherhood yes dear before i found out i was pregnant with my first son my nipples leaked like crazy and no period thats how i knew i was pregnant
If it's clear, it could be lymph?