Induce period? Maybe preggers?

I'm afraid I may be pregnant although I took a dollar store pregnancy test and it came out negative. I'm going to wait a week to buy another more accurate test so that's not an option.

I want to know if there's anyway I can induce my period before then. Maybe I'm just backed up and I would like to know if i can start it up.

I don't have sore boobs or any regular symptoms like nausea i just feel fat (not bloated just fat) do you think I could be pregnant? I'm 50 days late.

I'm taking a test next week