That is definatly Braxton hicks contractions. It is your uterus practicing & getting ready for labor. It's happened to me with all 4 babies. This is baby#5, haven't got em yet but I'm only 18wks. I know I started to get them before 24wks with my last baby. I actually carried him all the way to my scheduled c-section date. It really helps to drink a glass of water & they say to ly down on your left side. The left side is better because for some reason ther's more blood & oxygen going to the baby. If they continue and get closer together & stronger, you might wanna start timming them on paper & if they are consistant, you need to call your Dr. just to make sure it's nothing more. With my third, after I hit 28wks I kept going into preterm labor. I really didn't feel it everytime, but these contractions would get stronger & closer together, I would call the Dr. go into the hospital and yup I was in early labor! They would give me shots of turbutiline, & they'd stop. I'd stay in the hospital for 24hrs for observation and as long as everything was fine, i'd go home. They also have this test, it's like a pap smear & it takes an hr. to get the results and it will tell your Dr. if you're gonna go into preterm labor within 14days. I carried that baby until 35wks, he wanted out. He was small 4lbs,14oz & he was born with underdeveloped lungs, so they had to transfer him to a childrens hospital about an hr away. they gave him 2 doses of a medicine called surfactant(it helps the lungs develop) he only needed 2 doses and they are aloud four. It is a natural substance that is produced in utero at the end of preganacy. I took him home when he was 2wks old & he's never had any develomental delays. Don't wanna alrm you, just keep track of them as you get further along. Good Luck!