Cramps cd 19??

April

Hello! So me and my bf have been ttc for 12 months. This last month I started using the clearblue advanced digital opks. So this month I got the solid smiley on cd 13 and bd’d that day and the next 2 after that. So today is cd 19 and I am having really annoying cramps. Is this normal? My period is still 11 days away. My bf also started taking fertilaid for about a week. Please help!