Am I pregnant? Thoughts please...

hi everyone I'm currently new to the site and looking for some advice. I've been trying to conceive for 5 months now. This month I've felt a bit different and not sure if it's just me. Af is due on sat but for the past couple of weeks I've had a constant cold, runny nose etc, my sense of smell seems to be increased and have had slight cramps and a sore back. Only think I don't have is tender breasts. What's everyones thoughts on this?