Is my sister pregnant ???

Hi everyone! I need to serious advice 😅 I am 8dpo .. today and my breasts/nipples have been SO sore!

Well I squeezed my breast (I know, weird. I just thought it would help? 😂) well a bead of milky liquid came out... it looks like colostrum? Has this happened to anyone?? I have never breastfed nor had a child... I'm just very confused. It is happening with both breasts. My breasts are also very heavy and hard?

Also, I’ve been so gassy and constipated? I’ve also been having WILD dreams. I tested this morning and it was negative, but I have a feeling I don’t have enough HCG? I don’t know.. help!!

(My sister posted this on FLOW, but no one is answering her on there so I told her I’d post it here for her!)