Eyes changing

Kayla • I am 19 and pregant with me and myy husbands 2nd baby. first born feb 1 2016. 2nd babys due date is may 7th. hopibg for a boy but will probably get girl. either way beyond excited :)) ♡♥
I'm 36 weeks pregnant. And all of a sudden my eyes changed and I have a slight head ache. I was fine this morning then I went to the store and I looked at my phone and it looked weird. I'm not sure what's goin one. Any one else have this problem?