I am 44, an occasional smoker, taking progestin birth control pills and my period is 2wks late, & i take hcg shots. could i be pregnant?

Delayed Menses: If you are on birth control it's unlikely you are pregnant but you make have hormonal changes due to HCG injections so I recommend seeing your ob-gyn. HCG injections may cause false positive urine pregnancy tests but your doctor can perform an Ultrasound and verify if there is a pregnancy or order blood tests to quantify the level if needed.