Help. First time and scared

Victoria
So ladies, I have test four times. All positives but this would be my first pregnancy and I'm nervous it maybe a chemical pregnancy or something else. I had a difficult road, first diagnostic with cancer, then discovering I have fibroids. I don't want to tell my family till I see a doctor. Since they been saying I was probably never gonna get pregnant. I have some symptoms. I get cams of an on through the day. My nausua comes and goes. Have horrible leg cramp. My breast feel like someone jumped on them all day. Also sensitive to smells. Is this normal? Am I really pregnant? Has this happen to any of you ladies? Please help