Please has this happened to anyone else?

Hi so recently this year in April I got my Nexplanon implant removed I have been on the Nexplanon for a total of seven years and I am 20 years old after I got the Nexplanon removed it took four months for me to get my first cycle. without taking birth control pills for the three months and then on the fourth month I took birth control pills and I finally got my period in 7yrs and 4 months but then I start taking the birth control pills now I am 12 days late on my second period and I have been taking pregnancy tests they are all negatives but I have been feeling nacreous like I’m going to puke sometimes and my nipples were very sore and my back has been hurting, and I have had absolutely no appetite. I still have not got my period yet is there something wrong with me?