Why is my cycle so long lately?

Brandy
I always had a normal cycle before starting my birth control (yaz, a pill) and now I'm going longer and longer between periods. Right now I am 4 days late and on day 32 of my cycle. I took a pregnancy test yesterday and it was negative. Is this bad for my body? I'm seriously considering just stopping BC all together because this is weird. 
I'm also having headaches every night, stomach pain, ovary pain, and sensitive nipples.