I need advice!

My hubby and I are ttc.... we been married 3 months..... Saturday I spotted 1x Sunday I spotted 1x Monday I did a tad bit more than spotted.... I decided to wear a pad just in case this is af coming. Woke up this morning and was just spotted... changed pad and never seen blood on it unless I was cleaning myself. Could this be ib or what? My period is suppose to start Sunday.... please help me!!!!:-/ it's been 6 years since I had a baby and I never had any of this happen!