Is this implantation bleeding ?

Brittany

I had sex and spotted afterwards and then it stop and this all started march 19 and Wednesday night spotted and then it stop . Thursday I had a light flow and today its light nothing on my pad only when I wipe . And it looks like it’s stoping . I took a test negative just now . Period not suppose to be here until March 25 . I bleed early and yes my husband only cum in me once on the day I was ovulating . Not trying but happy if it does happen ether way . We have a 15 month old baby girl and if I am pregnant he or she is due the same time when my daughter was born . So that would be exciting ! Thank you just seeing if anyone experienced this .