pregnant or period.?

Ok ladies so i am 21 with two kids. I have had a bormal period since i was 12. My last period was may 12th. My bf nd i had sex sometime after that but not sure what days. My cycle goes every 28 days no more no less. My june period was supposed to be on the 9th. I got it on the 7th and i bled heavier for a short time only used one tampon and i had just started spotting on and off the rest of the day. It stopped on the 8th very early in the morning. The following wednesday i had spotted a little bit more. This is very unusual for me and i have most of the pregnancy symptoms. I did take two tests but they were neg. Maybe i tested too early. Any ideas.? I do have a doc appt tomorrow for a blood test but i wanted to get opinions first. Thanks ladies.! :)