Young and Pregnant

My period is 2 days late. It’s not normal. Usually I start on time. I’m going to work today and I’m buying a test to ease my nerves because it may be delayed because of stress but I haven’t been feeling myself lately. Bad dreams, bad headache, mild cramps, nausea at random... my best friend found out she was pregnant about a month ago. Me and my boyfriend use condoms almost every time we do it. ( don’t come at me)I’m not on birth control. I have tried to talk to my mom about it multiple times and every time I hint around that I want it, I get yelled at. I know I can go up there myself and get it but I have life 360 and she said if I turned my location off at any point, she’d cut my phone off. I’ll be 18 next month. My boyfriend is 17. I done graduated this year and he still has senior year. Any advice for a possible pregnant teen?

Btw, both of our parents aren’t gonna be

supportive at all. We’re terrified. Me and my boyfriend have been together for 2 years. He is my best friend.. he told me he would be there for me no matter what happened. I’m not worried about him leaving.