Sighs of pregnancy?

D🌺
Hi ladies,I remove my nexplanon (have 2,1/2y without any period)last September14.since we've been trying and nothing.this moth for the first time I buy acid folic (tesco)(I didn't know what is the best brand😥) and last 3days I'm feeling with cramps back pain and other day feeling very hot🔥(this day I'm sweeting a lot and it's not normal) and for the first time I spotting but just a little like when your period came but the only diference it's my period hopefully don't came on 22january Who feeling the same? It's ir 3👶 but it's first time this happen to me😐 my last 2pregnancys are normal,taken pill. This time I know it's diferent because this nexplanon change my all cycle. Any advice? Thank you✨👶💖💐👦👧