Could I really be pregnant?

I have very irregular periods. I've gone up to 7 months without one before. My Husband and I have been TTC for about 8 months with no luck. A "regular" cycle for me can be between 1-2 months in frequency on average, and last about a week. I haven't had a period since August. I took a test two days ago it said negative. Being that we go through these like chips, I tried again today and I got a faint ish positive. I have had zero noticeable symptoms and I'm just not sure. Could it be true? Should I wait a few hours and take another before telling my husband? How common is a false positive? Thank you!