Advice please

Hello I came off my pill on the 12/07/15 and had my period on the 20th July which lasted 3 days. On the 25th I had abdominal cramp which woke me up and stopped after a few hours and then on the 26th I was spotting for a few hours and again stopped. I have had nausea and loss of appitite, headache, tiredness and white vaginal discharge for 3+ weeks now. We are trying for our third baby. Could I be pregnant now?