Advice needed!

Beginning of last period was Sept 30 bf went inside on the 13. The last couple weeks I've been really bloated. Most of the time it's completely random. A few times its been while I'm eating. I took a test Friday morning and it was negative. Is there still a possibility? If I were I'd be almost 5 weeks but I haven't been experiencing anything expect bloating. PS. I've been off the gildess fe 1/20 pill for about 3-4 months.