Missed period

Charlie

Okay so am Day 4 missed period I’ve not done a test yet.. but I’ve got so sore boobs and cramping like my period is going to come and feeling really sick and wanting anything that is sweet. I worked out through this app if I am pregnant I will be 4weeks and 3days I can’t get a doctors appointment until next week... I already have one child who is 1.5yrs. Anyone help?