First time TTC

Crystal

My period was due Oct 2nd. Had very light one time spotting that morning. Took a test on Wednesday night and it had a faint line. Took another test next Thursday morning the 4th again positive test with faint line. Woke up just now (3am) went to the bathroom and wiped and had light brown spotting with cramping. Was going to take a test again when My husband got home from work. Is this normal? Could it be implantation?