Pregnancy???

Abbeni
Ok i stoped my shot in july i was spost to go get one. Never went. I only had two shots. My last period was in october and me and my husband had sex after i stoped my period. I havent had a period this month at all i was spost to start the 2nd. I took the cheap 88¢ test said no last week. Im super sleepy i just wanna sleep. Should i take another test??? We are trying for baby #3.