Me and my boyfriend are trying to have a baby. We have had sex every every month and on September 25 I have had spotting and very light throughout the day and it's now the 20 and I started bleeding yesterday vey light but then got heavier during the day and night . Is there a chance I could be pregnant ? The only symptoms I've been having is very tired and mood swings really ba, and my stomach been upset and a little bit of back pain I took a pregnancy test on the 9th and came back negative should I take another one? Please help