someone help😭

Megan
So I'm on the pill, this is my fourth month. I've never missed one. Last month I had protected sex with a condom and he pulled out. I had mid cycle spotting that month and got my withdrawal bleed like normal.
Now this month, we haven't had any sex, I got the same mid cycle spotting but a little lighter, and now my withdrawal bleed seems to be a little late?
I'm having bad cramps and sometimes nausea and back pain and I'm really worried that I'm pregnant even though it's probably not even possible 😭 last night I took my second placebo pill. Can anyone help? Thanks 😭