Out of patient

Hi guys it my frist time posting on this site .Me and my hubby been trying almost two years no luck.I just get off of clomid on 6/5/2015 I am having intercourse every other day .SINCE Saturday I been having symptoms like back pain and I feel cramping and it feels like my period is comming.I am very sad at this point cause I can't Waite anymore.can someone please tell me what this mean.pleassee