Is this a normal thing?

Ra

I have been breastfeeding for over 19 months now, and only from the left side for the last 6 or so months. My right breast still has milk but pretty much went all deflated and saggy.

We have tried for another baby and since then my right boob is just as swollen as the left one if not more.

Can this happen randomly?

My period is 2 days late and I have had 3 negative pregnancy tests 😣