Could I be pregnant?

I’ve been taking loestrin 20 a combination pill for about 9 months now. In the beginning when I went on my break my period came instantly and would slowly get lighter until it stopped just before I started a new pack.

For the past two months (the last two breaks) I’ve had no period at all!

Its not like I could be still adjusting to this pill as I’ve been on it for more than three months.

I know a pill break is a withdrawal bleed not an actual period but...could I be pregnant? Should I test?