I've been throwing up for days now. Not in the morning but mid day. My period is super late. The…

I've been throwing up for days now. Not in the morning but mid day. My period is super late. The first day of my last period was July 30. I think I'm just scared to test because my youngest is only 8 months. My oldest was only 7 months when I got pregnant with my second. I will probably buy a test and see what happens. I took one about 2 weeks ago but nothing showed up.