Confused about this

I have an irregular period but for 2 months now my periods have been light with no clots in them. Not my usual period and only lasting 1 day also not my usual period since mine last for 2-3dys. My breast are bigger and there vieny, also I get nauseas, have random headaches and get cravings. This month my period came 5dys late so I took 2test and 1 came out faintly positive and the next day my period came and after it finished I took another test and it still shows faint positive. What's going on with me? #HELP