spotting for a couple days - need to start

so my period has been irregular since i started it when i was 12, i mean like being late or early around 2 weeks between periods, so i ALWAYS have to carry tampons & pads with me just incase i start when i'm not expecting to. but i quit my job july 5th and have been stressed out about a lot of things going on in my life & i was supposed to start my period around july 7th but didn't & i just started spotting both brown & red blood two days ago on tuesday but it hasn't been consistent, just spotting when i pee & on my panty liner a couple times through out the day (not enough blood to wear a pad or tampon) but usually the first couple days of my period are very heavy and the last 3/4 are light & barely there. i'm still a little stressed out from wanting to start my period & have it be done by thursday august 3rd because i will be going out of state that day & do not want to have to deal with it. is there any things that could help me induce my period to make it come heavy now? or has anyone else experienced a really light period due to stress? & is it normal for people to experience it? thanks so much in advance!!