Pregnancy Symptoms or PMS??

Hey ladies! Just seeking some advice....so I don't know if I'm having pregnancy or PMS symptoms. I have been off the pill for about 2-3 months now and about 20 days ago I had a very short cycle. Mine are normally 7 days and pretty heavy, but this one was 4 days and only 2 days of light to medium bleeding. I have been extremely hungry, having dry mouth, headaches, extremely tired, and very forgetful lately. I took a blood test about a month ago because my period was 2 weeks late, which could have been a side effect of the pill. The blood test came back negative...but my body is saying otherwise. What do you ladies think? AF is expected to hit again this week or next week. I'm trying to wait it out to take a hpt.