Implantation???

I'm currently having spotting but I'm not due for my period for a week, My husband and I have been trying for our second child and I'm scared that my body won't take it again after the huge mistake I made years ago which caused a delay for having a second child so why am I bleeding? I'm cramping etc and I'm just not sure what to think. My husband keeps saying I'm only 29 I'm fine and it's probably just what happens but I'm scared. I don't remember spotting with our first. I plan on taking a test Monday morning but is it normal? I've looked up implantation bleeding but it's a lot and we're trying to surprise our family and friends so I don't want to call and ask and raise the suspicion. Again I'll be testing Monday but I've had to put in a pad now.....I'm scared I messed up so bad in my past that we waited to long to have another baby. I'm scared of breaking my husband's heart AGAIN or being the reason we can't continue our family. I've caused him enough pain and I'm scared I'm about to cause him more heartbreak.....any advice or anyone deal with this? I'm so scared my body will just reject any attempt we try from now on....it's a mental battle....