!!!Nextplannon Implant issues!!!!

Has anyone had this contraceptive? I got this maybe 1 and a half to 2 years ago after my baby was born and got it taken out months later because I began to lose my hair tremendously. Mood swing were crazy, and I never got post partum but after I got it removed because I began feeling very depressed definitely not myself. The removal has been a little over a year now and my doctor stated it would take a few months for all the hormones to get out my system. Another side effect was my period. It was very irregular. I would either get it every other month or not at all or every other week. I imagined when I got it taken out everything would go back to normal. This is not the case. So like I said it's been a while since it's been removed and me and my husband have tried over and over again to get pregnant. Following ovulation counting my period days and keeping track. Everytime i think I'm pregnant i take a pregnancy test because I'm a month or 2 months late but then the test comes out negative and soon following my period. Sets me up for upsetting myself. I have 2 children and this attempt would be our last baby. I really was hoping to have 2 before 2, because my oldest is 10. I really wanted my daughter to have a sibling but it hasn't happened it makes me so upset. Has anyone had problems with the after effects if u have had it. I hope this isnt a sterile problem because of it. If u have had these problems what have u done about it. My doctor just states it takes time. I feel hopeless and I feel like I need to do more. So ur help is appreciated!