Is cramping normal?

So I had an iui done on Sept 27th and today is two weeks since. I have taken 6 pregnancy tests and they all came back positive! However, I am worried because I have major cramps like I am about to start my period. I am unsure if this is normal during the first few weeks of pregnancy or if it is a sign that I got 6 false positives. If anyone has any advice or similar experiences please share! I am going crazy and have so much anxiety about it because I want a baby so bad.