4 days late

I have been taking birth control for several months now, since hubby and I got married in October. About a month back I was on antibiotics and the doc said they shouldn’t affect my birth control but we didn’t have sex while on it just in case. Or at least I don’t think we did. Now I’m 4 days late, super gassy, tummy is upset off and on, way more tired and super moody the lady week. Could I possibly be pregnant? Is it to early to take the test, I know most people say wait I’ll you’re a week late