I might be Pregnant

I'm 13 days late according to the app I sometimes get 2 periods in a month one starting during the month and another like the last days and going in to next month. However I have been nauseated every single day for about a week or so and actually throwing up and everything is gross to DA except maybe 2 things pizza and fries and I hate junk food my bf likes that kinda stuff but thats aside the point nervous asf to take a test because I wanted to plan my baby out I took the morning after pill as well just in case and idk man I have pregnancy and period symptoms and I'm just scared RN and he says i should take a test but I don't want too at least not yet cause I'm scared of I take test than and I get my period it my be a miscarriage and im just stressed tf out idk what to do I love kids but really wanted my baby planned and not like this hoping I'm not prego at least not for a few more months or towards the end of the year....