TTC and PCOS - very Sore breasts

Hi all just wanting a bit of advice....I had a miscarriage in July have been trying to conceive for a few years so was over the moon but sadly miscarried at 5wks 1 day and when there and getting scan was told I have one polysystic ovary...so just been hoping a miracle happens again! The past 2.5 weeks i have had a metallic taste in my mouth and I have had really sore breasts and I have tested but was negative my period is due on Monday so 7 days time, just was wondering if anyone else had very sore breasts for that long before period...I am scared to do this early clear blue test on Thursday as didn’t want to do it too early! Just wanted a bit of advice or your experiences shared thank you in advance 🙏🏼