Help what is going on

I'm 17 weeks and 5 days woke up with this on both legs undeneatg my butt. I haven't felled nothing. It doesn't hurt don't knOW why I

Have it. Some of Mt blood work came back shows also that my total protein low and that my albumin in low along with potassium. I've been feeling very dizzy the past couple days. I javent gotten a cbc count. Also my cre in blood showing low too. I eat healthy and eat all the time. And drink water alot too. I went to dr lost week I was 123 and prior to 3 weeks before I was 130. Help. I've been itching alot too but may be from the Makena shots that I'm on for preterm labor.