Sore breast

Theresa • Married house wife. My first pregnancy ended in MC. My second pregnancy I have a healthy baby boy born April 21 2018. Now for weight loss.
I have PCOS,  I have been TTC for years now. 
***UPDATE:  I took 3 test this morning and one was a dud. The other two came out positive. ***
I have been documenting my periods.  I'm taking metformin to help regulate my periods and i also don't want to be on birth control. 
So for 4 months I've been regular but I am late a week today I got all the PMS symptoms and still experiencing symptoms. 
I had really sore and heavy breast so sore even to touch and a lower abdomen heaviness and achyness insomnia and fatigue. 
Just wondering if I could be pregnant or has any experienced anything similar? I haven't taken a test yet I'm going to at the end of this week. Any feed back thanks. 

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