Possibly pregnant?

I have alway had a very irregular cycle, but I have been on my period for over 2 months now, excluding a couple as of not bleeding. The past couple weeks I have been having really bad insomnia and for the past few days I've had bad breast pain. So I guess I'm wondering if it's possible that I conceived while still on my period. My husband and I are intimate 1-2 a week for the past 4 months, and 5-6 days a week for the last 2 weeks. I haven't taken a test because whenever they are negative I get depressed.