confused

Usually my periods are always on time & regular (5 days) but last month it was weird. I spotted for 3 days had my period for 5 & then spotted another 2. This month I wasn't having any of my usual symptoms & my period was 4 days late. I got it today but again it's weird. It's runny, no clotting, & there's a lot of clear discharge with red streaks. I'm really confused & my boyfriend is getting excited. I don't want to get excited for no reason. I have an appointment set for Friday but i just feel really anxious. Is there any way i could be pregnant or is it just my period acting up?