Tingly breasts - perimenopause or pregnancy ?

I had unprotected sex during the time I ovulated. About 4 days later, my breasts and nipples started feeling sore and tingly. It has been 10 days and they are still tender and swollen feeling. My period is not due for 6 or 7 more days. I have taken a couple HPT and they are all negative, although I know it is kind of early. I have taken HPT tests this early before and gotten positive results. I am 40 yrs old and was pregnant 7 mos ago, which ended in MC. My OB/GYN says that this could be a sign of perimenopause. I haven't had any symptoms of perimenopause before and still have regular periods. I have also been a little nauseous at times and my face is breaking out like crazy. Any suggestions from anyone? The suspense is killing me!