A lil nervous i jumped the gun...

Well, it all started when i had my norplant removed in Jan. Within the 2wks, me an my husband had unprotected sex. Had a period Feb 5-9. Usually id have 2 in a month but i didnt the rest of feb thru march 20. An by this app an many others, my period was over 16days late. I had took numerous tests at home but no positives. Then it came, so i think, for 3 days. It was really dark then turned pink for the other 2days. I took another test an still neg so i got back on the shot. But my body is wierd, home test have not worked for me in the past. I have an erry feelin im pregnant. I have been having wierd cramps all day, mood swings thats been lasting over a month now.

Should i had got a blood test before gettin the shot? Im kinda lost an need someone to talk to