Implantation question

I am on cycle day 32. I'm usually between 28 and 30 day cycles but the calander says I'm not suppose to start for another 2 days the 24th. I have had no spotting but if I've had any other symptoms I don't know because I have been sick with strep throat (daycare teacher) my question is can you still be pregnant and either not have implantation bleeding or completely miss it.