I'm currently breastfeeding my 26 month old son, and we are a cosleeping family. My first period came just after his second birthday, at 24 months, but has not come since (now 4 weeks past due). I was hopeful that we were expecting number two, but a pregnancy test at 1 week past due came back negative... But I have been experiencing breast and nipple tenderness for at least a week now and feel like I've had to urinate a lot more frequently. Is it just likely my body's readjusting to menstruating and finding a cycle, or should I get another pregnancy test? Thanks for any insight.