Hi all, I need some advice

Im on the pill, i went on holiday and doubled up on the pill, as in I took my normal packet and instead of taking a break I took another packet straight away , I'm now on my second packet and third week of the pill, I've had sex without a condom 4 times, after the 4th time I looked at my underwear and toilet paper to see I had bled. Is there any chance I'm pregnant? And is it normal to bleed while taking doubling up on the pill?

Please help I'm really worried 😩