Should I test?

Kae
my cycles are usually 27 days long. My last cycle ended up being 29 days long(yes I was late starting my period by 1 day in a half) when I bled it was very very heavy and a dark red color. Today it's a light flow! I also am having mild cramps and feel sick/neasua.  There multiple days I be hungry but scared to eat because I feel Ima throw up. Should I test ?