Excited!!

My husband and I had been TTC for about 6 months. I started taking Premama and also praying to God that I’d finally see two lines on my pregnancy test. Yesterday after missing my period I took a test and it’s official!!!!! I couldn’t believe it so I took four more lol and a hospital visit. I’m super excited. This is my first pregnancy and I’m a little worried because I know I’m pregnant but I’m cramping as if I’m on my period. No spotting or anything. Just bad cramps. Should I be worried? I’m only 4 weeks.