How many weeks am I?!

Liz
This is my time line! How many weeks might I be? Could the 'period'on 28th Jan be withdrawal from my pill bleeding or maybe implantation? Thanks!! 
Fri 1st Jan - period until Tuesday 5th Jan
Wed 6th Jan - stop taking pill as planned 
Thurs 28th - bleeding / period until Monday 1st Feb 
Mon 8th Feb - boobs double in size and become sore. Feel unwell all week 
Sunday 14th Feb - positive clear blue test reading 3 weeks plus pregnant 
Mon 15th Feb - period pain type discomfort intermittently all week. Nausea but not sick