could I be

Hey guys. Got a couple of questions 
I have not had a period in 2 months now and not really cramps but got sick only 2 times taken 4 test 2 say yes and 2 say no. I'm really scared I have had 2 miscarriage and I'm only 20 about to be 21 me and my bf have been together seen 10 grade we graduate high school together and have all way been together. Is there any thing I can do to see if I'm pregnant I have a dr app but it's 3 weeks away and we really want to know because we really want a kid. Any advice thanks