Worried

This is my 3rd pregnancy, have a 9 year old and had a miscarriage at the beginning of the year. I don’t remember everything from my first pregnancy due to it being so long again lol. But, Me and my husband had sex last night and throughout the night I work up to a sharp pain on one side and now today I’m having period like cramps? I’m 6w4d and I’m worried because this is about how far along I was when I miscarried. Is this normal or should I be worried?