I'm losing a lot of weight I thought that everything was supposed to shrink but it seems like my shoes and slippers are getting tighter. Why's that?

Tight show mystery. Feet size generally remain unchanged with weight loss. However it is a mystery why your shoes are actually getting tighter with weight loss. Perhaps you are accumulating some fluid in your feet and ankles. If you do notice swelling in your feet and ankles do talk to your doctor.