can you have implantation without bleeding?

Alisha

so my hubby and I have tried the preseed and I only have 1 tube working and the other is blocked due to my endo. anyways we have been trying since Feb. after my 1st period from surgery for my endo. well last month about 2 weeks ago we tried the preseed during my ovulation period time frame and I'm suppose to start my period tomorrow. I had some cramping on Monday and Tuesday no blood just cramping and a headache. after Tuesday went by I had nothing no headache and no cramping. now ive had no symptom of starting my period at all and threw out my time since I started ive cramped spotted and tummy aches. do y'all think I might be pregnant? ive taken 5 test 3 said positive in its window time frame and 2 said neg. I dont know im scared and I couldn't find the right group so im sorry if this is the wrong group but can one of y'all or all of y'all tell me?