Always irregular when I’m active

I’m always regular but when I become active I’m irregular i been with my boyfriend about 5 months now and i have been getting my period every month just different days but this time I’m 29 days late I’m over emotional about everything when I was 10 days late I thought i started but it was just 2 days of just brownish pinkish only when I whipped and I took a test and came out negative but still haven’t got anything and today is 29days late should I take a test again? Also I’m over weight so I know would be hard for me to get pregnant but I have most of the signs I really want a baby but don’t know if I can handle another negative