Is it still to early? Please help asap!!!!!

Im 7 days late for my period, taken two tests but have both been negative. Usually have regular cycles which last 25 days. But i missed a one in September and came one for 3 days in october and then another 3 days at the end of october. I was supposed to come on the 19th of november but still nothing.

I cant understand what could be wrong with me. Me and my boyfriend have been having unprotected sex so i cant understand why im not getting pregnant either.

I had the implant for 3 years and had that out on january 9th and i went straight on to the mini pill which i stopped in march.

Please can someone help:) need advice asap!! Xx